Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

Mastering physics introduction to static equilibrium

23/11/2021 Client: muhammad11 Deadline: 2 Day

https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=3680848 1/12

Assignment 3

Due: 11:59pm on Sunday, July 26, 2015

You will receive no credit for items you complete after the assignment is due. Grading Policy

Tactics Box 4.1 Drawing Force Vectors

Learning Goal:

To practice Tactics Box 4.1 Drawing force vectors.

To visualize how forces are exerted on objects we can use simple diagrams, such as vectors. This Tactics Box

illustrates the process of drawing a force vector by using the particle model, in which objects are treated as points.

TACTICS BOX 4.1 Drawing force vectors

1. Represent the object as a particle.

2. Place the tail of the force vector on the particle.

3. Draw the force vector as an arrow pointing in the direction that the force acts, and with a length

proportional to the size of the force.

4. Give the vector an appropriate label.

The resulting diagram for a force exerted on an object is shown in the drawing. Note that the object is represented as

a point.

Part A

A book lies on a table. A pushing force parallel to the table top and directed to the right is exerted on the book.

Use the diagram below to draw the force vector . Use the black dot as the particle representing the book and be

certain to draw the force vector so that it has the correct orientation.

Draw the vector starting from the black dot. The location and orientation of the vector will be graded. The

length of the vector will not be graded.

ANSWER:

F ⃗

F ⃗

p

F ⃗

p

7/20/2015 Assignment 3

https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=3680848 2/12

Part B

This question will be shown after you complete previous question(s).

Part C

This question will be shown after you complete previous question(s).

Problem 4.7

A mountain climber is hanging from a rope in the middle of a crevasse. The rope is vertical.

Part A

Identify the forces on the mountain climber.

Check all that apply.

ANSWER:

7/20/2015 Assignment 3

https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=3680848 3/12

Problem 4.16

A constant force is applied to an object, causing the object to accelerate at 10 .

Part A

What will the acceleration be if the force is halved?

Express your answer using two significant figures.

ANSWER:

Part B

What will the acceleration be if the object's mass is halved?

Express your answer using two significant figures.

ANSWER:

Part C

What will the acceleration be if the force and the object's mass are both halved?

Express your answer using two significant figures.

ANSWER:

Part D

What will the acceleration be if the force is halved and the object's mass is doubled?

Express your answer using two significant figures.

Kinetic friction

Weight

Static friction

Normal force

Tension

f

k

w⃗

f

s

n⃗

T

m/s

2

a = m/s

2

a = m/s

2

a = m/s

2

7/20/2015 Assignment 3

https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=3680848 4/12

ANSWER:

Problem 4.22

Two children fight over a 200 stuffed bear. The 25 boy pulls to the right with a 15 force and the 20 girl pulls

to the left with a 17 force. Ignore all other forces on the bear (such as its weight).

Part A

At this instant, can you say what the velocity of the bear is?

Enter yes or no.

ANSWER:

Part B

At this instant, can you say what the acceleration of the bear is?

Enter yes or no.

ANSWER:

Part C

This question will be shown after you complete previous question(s).

Part D

This question will be shown after you complete previous question(s).

A Book on a Table

A book weighing 5 N rests on top of a table.

a = m/s

2

g kg N kg

N

7/20/2015 Assignment 3

https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=3680848 5/12

Part A

A downward force of magnitude 5 N is exerted on the book by the force of

ANSWER:

Part B

An upward force of magnitude _____ is exerted on the _____ by the table.

ANSWER:

Part C

Do the downward force in Part A and the upward force in Part B constitute a 3rd law pair?

You did not open hints for this part.

ANSWER:

the table

gravity

inertia

.

6 N / table

5 N / table

5 N / book

6 N / book

7/20/2015 Assignment 3

https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=3680848 6/12

Part D

The reaction to the force in Part A is a force of magnitude _____, exerted on the _____ by the _____. Its direction

is _____ .

You did not open hints for this part.

ANSWER:

Part E

The reaction to the force in Part B is a force of magnitude _____, exerted on the _____ by the _____. Its direction

is _____.

ANSWER:

Part F

Which of Newton's laws could we have used to predict that the forces in Parts A and B are equal and opposite?

Check all that apply.

ANSWER:

yes

no

5 N / earth / book / upward

5 N / book / table / upward

5 N / book / earth / upward

5 N / earth / book / downward

5 N / table / book / upward

5 N / table / earth / upward

5 N / book / table / upward

5 N / table / book / downward

5 N / earth / book / downward

Newton's 1st law

Newton's 2nd law

Newton's 3rd law

7/20/2015 Assignment 3

https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=3680848 7/12

Part G

Which of Newton's laws could we have used to predict that the forces in Parts B and E are equal and opposite?

Check all that apply.

ANSWER:

PSS 5.1: Equilibrium problems

Learning Goal:

To practice Problem­Solving Strategy 5.1 Equilibrium problems

A 20­ loudspeaker is suspended 2.0 below the ceiling by two ropes that are each 30 from vertical. What is the

tension in the ropes?

PROBLEM­SOLVING STRATEGY 5.1 Equilibrium problems

PREPARE First check that the object is in equilibrium: Does ?

An object at rest is in static equilibrium.

An object moving at a constant velocity is in dynamic equilibrium.

Then identify all forces acting on the object and show them on a free­body diagram. Determine which forces are known

and which you need to solve for.

SOLVE An object in equilibrium must satisfy Newton’s second law for the case where . In component form, the

requirement is

and .

You can find the force components that go into these sums directly from your free­body diagram. From these two

Newton's 1st law

Newton's 2nd law

Newton's 3rd law

kg m ∘

a⃗= 0

a⃗= 0

∑Fx = max = 0 ∑Fy = may = 0

7/20/2015 Assignment 3

https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=3680848 8/12

equations, solve for the unknown forces in the problem.

ASSESS Check that your result has the correct units, is reasonable, and answers the question.

PREPARE

Determine what sort of equilibrium your system is in. Then, draw a free­body diagram and determine useful

relationships between the forces.

Part A

Which of the following statements are correct about the situation described in the introduction?

Check all that apply.

ANSWER:

Part B

Identify the forces acting on the loudspeaker and then draw them on the free­body diagram.

Draw the vectors starting from the black dot. The location and orientation of the vectors will be graded. The

length of the vectors will not be graded.

ANSWER:

The loudspeaker is in static equilibrium.

The loudspeaker is in dynamic equilibrium.

The loudspeaker is not in static equilibrium, because it is not on the ground.

The loudspeaker is not in dynamic equilibrium, because it is accelerating.

7/20/2015 Assignment 3

https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=3680848 9/12

Part C

This question will be shown after you complete previous question(s).

SOLVE

Use the conditions for equilibrium to determine the tensions in the two ropes.

Part D

This question will be shown after you complete previous question(s).

ASSESS

Determine whether your answer makes sense.

Part E

This question will be shown after you complete previous question(s).

7/20/2015 Assignment 3

https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=3680848 10/12

Problem 5.13

A horizontal rope is tied to a 40 box on frictionless ice.

Part A

What is the tension in the rope if the box is at rest?

Express your answer using two significant figures.

ANSWER:

Part B

What is the tension in the rope if the box moves at a steady 9.0 ?

Express your answer using two significant figures.

ANSWER:

Part C

What is the tension in the rope if the box has = 9.0 and = 5.0

Express your answer using two significant figures.

ANSWER:

Problem 5.17

A woman has a mass of 50.0 .

Part A

What is her weight on earth?

ANSWER:

kg

T = N

m/s

T = N

vx m/s ax m/s

2

T = N

kg

wearth = N

7/20/2015 Assignment 3

https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=3680848 11/12

Part B

What is her mass on the moon, where ?

ANSWER:

Part C

What is her weight on the moon, where ?

ANSWER:

Problem 5.23

Part A

A 0.57 bullfrog is sitting at rest on a level log. How large is the normal force of the log on the bullfrog?

Express your answer using two significant figures.

ANSWER:

Part B

A second 0.57 bullfrog is on a log tilted 23 above horizontal. How large is the normal force of the log on this

bullfrog?

Express your answer using two significant figures.

ANSWER:

Problem 5.25

Bonnie and Clyde are sliding 430 bank safe across the floor to their getaway car. The safe slides with a constant

speed if Clyde pushes from behind with 420 of force while Bonnie pulls forward on a rope with 260 of force.

g = 1.62 m/s

2

mmoon = kg

g = 1.62 m/s

2

wmoon = N

kg

n = N

kg

n = N

kg

N N

7/20/2015 Assignment 3

https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=3680848 12/12

Part A

What is the safe's coefficient of kinetic friction on the bank floor?

ANSWER:

Score Summary:

Your score on this assignment is 0.0%.

You received 0 out of a possible total of 30 points.

μ = k

Mass (kg) Weight (N)

Acceleration (m/s2)

Scale Reading (N)

Newton's Second Law

Part A, Section B

An object with mass m = 100 kg is sitting on a scale in an elevator. Use Excel to determine the

reading on the scale (in Newtons) for the following four situations.

i) Elevator accelerating upward at 3 m/s2

ii) Elevator moving at constant speed

iii) Elevator accelerating downward at -3 m/s2

iv) Elevator accelerating downward at -9.8 m/s2

Input: Acceleration of the elevator

Output: Reading on the scale

Mass (kg)

20

40

20

20

Velocity (m/s) Force (N)

20

20

40

20

-20

-20

-40

-40

Acceleration (m/s2)

Time to come to rest (s) Stopping distance (m)

Newton's Second Law

Part B, Section A

An object with a mass m is moving with an initial speed vand is acted on by a single force F in

the opposite direction of its motion. Use Excel to determine how long it will take the object to

come to rest and how far the object travels until it stops.

i) If the mass is doubled, what is the effect on the time? On the stopping distance?

ii) If the initial velocity is doubled, what is the effect on the time? On the stopping distance?

iii) If the force is doubled, what is the effect on the time? On the stopping distance?

Input: Mass, initial velocity, force

Output: Acceleration, time to come to rest, stopping distance

Mass (kg)

Fx (N)

20,000

50,000

vx (m/s)

vy (m/s)

ay (m/s2)

100,000

time (s)

ax (m/s2)

Fy (N)

Newton's Second Law

Part B, Section B

v (m/s)

x (m)

y (m)

A rocket ship, with mass m = 20,000kg and engines mounted perpendicularly in the x- and y-directions,

fires both rockets simultaneously. The engine oriented in the x-direction fires for 3 s and shuts off. The

engine oriented in the y-direction fires for 7 s and shuts off. The force from the engine in the x-direction is

50,000 N, and the force from the engine in the y-direction is 100,000 N. Make a scatter plot of the y-position

d (m)

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

5.5

6

6.5

7

7.5

8

8.5

9

9.5

10

of each particle as a function of the x-position, showing the trajectory of the rocket.

Use Excel to determine the following.

i) While the engines are firing, what is the acceleration of the rocket in the x- and y-directions?

ii) After 7 s, what is the velocity of the rocket in the x- and y-directions?

iii) After 7 s, what is the speed of the rocket?

iv) After 7 s, how far has the rocket travelled in the x-direction? How far has it travelled in the y-direction?

After 10 s?

v) After 7 s, what is the displacement of the rocket? After 10 s? Is the displacement of the rocket the

same as the distance travelled? Explain.

Rocket Trajectory

y

vi) If the mass of the rocket is doubled, what happens to the displacement?

12

10

8

6

4

2

0

Output: ax, ay, vx, vy, x, y, d

0

2

4

6

x

8

10

12

Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

Instant Homework Helper
Accounting & Finance Mentor
Fatimah Syeda
Top Essay Tutor
ECFX Market
Financial Assignments
Writer Writer Name Offer Chat
Instant Homework Helper

ONLINE

Instant Homework Helper

I will be delighted to work on your project. As an experienced writer, I can provide you top quality, well researched, concise and error-free work within your provided deadline at very reasonable prices.

$34 Chat With Writer
Accounting & Finance Mentor

ONLINE

Accounting & Finance Mentor

I am a professional and experienced writer and I have written research reports, proposals, essays, thesis and dissertations on a variety of topics.

$47 Chat With Writer
Fatimah Syeda

ONLINE

Fatimah Syeda

After reading your project details, I feel myself as the best option for you to fulfill this project with 100 percent perfection.

$31 Chat With Writer
Top Essay Tutor

ONLINE

Top Essay Tutor

I find your project quite stimulating and related to my profession. I can surely contribute you with your project.

$38 Chat With Writer
ECFX Market

ONLINE

ECFX Market

I have worked on wide variety of research papers including; Analytical research paper, Argumentative research paper, Interpretative research, experimental research etc.

$40 Chat With Writer
Financial Assignments

ONLINE

Financial Assignments

As per my knowledge I can assist you in writing a perfect Planning, Marketing Research, Business Pitches, Business Proposals, Business Feasibility Reports and Content within your given deadline and budget.

$50 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

Exercise 10: single sponsor story and Journal 13 - When entering foreign markets basic entry choices include - Five stages of the helping process - Write a Policy meno , (health policy and research) - Nether green infant school - Borland's Brave Beginning - Discussion about A digital forensics professional - Consecutive interior angles converse - Identify the four challenges associated with e business - Describe the role of three external services during an emergency - Concept analysis paper - JC Economics Tuition Singapore - How to graph x 6 on a number line - Affidavit family court wa - Trade Regulations and Industrial Policies Discussion - Simplifying the Dissertation Writing Journey in the UK - Operational planning - Cracking the code of life video questions worksheet answers - Cjjs - Te sugiero que primero (tú) (1) (escribir) una lista de las cosas que quieres en un apartamento. - Compare and contrast the different types of plans - The liabilities section of o brian's balance sheet - Think like a freak summary sparknotes - Week 3 Reflection - Business Proposal for Change - ISO framework network management - Vodafone zoozoo ads case study - Human resource - Ford interest advantage login - Montserrat gcse case study - Igcse geography coursework examples - Homeward trust housing first - Discussion 2- Reply to Ruth - Transformations unit test part 1 - Pizza hut value chain analysis - Https www 123test com team roles test index php - Sonoma state university transcripts - Discussion - Stat - For your advice please - Pdhpe core 1 syllabus - Accounting discussion - Xcode address book - Rosemount 3051sal level transmitter - English national ballet school accommodation - Interprofessional collaboration - Intelligent traffic control system project report - The great elephant census video - Pestle and swot analysis - All summer in a day essay - Q&d - English - Ucsb library study room - How to do a mock trial in the classroom - Research paper - Sub-section 3 - Gib head key formula - Cheap hotels near royal brompton hospital - Macbeth act 3 discussion questions answers - Wireshark - How do banding patterns change when a muscle contracts - Anthracene and maleic anhydride product - Floating beer pong table spencers - Rm maths learning system - The vampire diaries lexi real name - Discussion; Union Carbide Malfunctions - Marketing Paper - All american boys chapter summary - Burning iron wool equation - EVIDENCED BASED PRACTICE - 5 to 32 line decoder - Backward Design Unit Plan - Silvan selecta spare parts - DIT - 10 2 police code - Rubric for evaluating children's books - Hunter united credit union - Bob jones university dress code - Conbraco rpz valve test points - Safe work methods statement - Mgt - Tina jones abdominal assessment answers - Vision for the Future - Tax prep 1 tax course 101 final - Gordon rule format - Tutor Account On Sale - Thermodynamics enthalpy of reaction and hess's law lab calculations answers - The most common circumstance for project closure is simply a - Censorship in fahrenheit 451 - Chinese english medical terminology - In n out burger interview questions - Bank robbery prevention tips - As4100 - Northumbria university semester dates - Management at a Company - Properties and reactions of acids and bases lab report - Consider the two categories of products that timbuk2 - Legal underpinnings of business law - How to overcome barriers to effective reading - Salford city council bins