Question: Sample Problem 2 A woman pushes a trunk on a railway platform which has a rough surface. She applies a force of 100 N

Sample Problem 2 A woman pushes a trunk on a railway platform

Sample Problem 2 A woman pushes a trunk on a railway platform which has a rough surface. She applies a force of 100 N over a distance of 10 m. Thereafter, she gets progressively tired and her applied force reduces linealry with distance to 50 N. The total distance through which the trunk has been moved is 20 m. Frictional force is 50 N versus displacement. The work done by the two forces over 20 m is (d) -1000 / (a) -25 / (b) -50 / (c)-100/

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Physics Questions!

A horizontal force of 100 N pushes a 12-kg block up a frictionless incline that makes an angle of 25 with the horizontal. (a) What is the normal force that the incline exerts on the block? (b) What...

A 12 N horizontal force F pushes a block weighing 5.0 N against a vertical wall (Fig. 6-26). The coefficient of static friction between the wall and the block is 0.60, and the coefficient of kinetic...

A bulldozer pushes 500 kg of dirt 100 m with a force of 1500 N. It then lifts the dirt 3 m up to put it in a dump truck. How much work did it do in each situation?

Math\t107-6381\t-\tQuiz\t#4\t-\tSchultz\t-\tDue\tFebruary\t21,\t2016\t-\tpage\t1\tof 3 Follow\tthese\tdirections\tcarefully. This\tquiz\tis\tdue\tby\t11:59\tEastern\ttime\ton\tFebruary\t21,\t2016. o...

hi please help me out with those questions and i wiil give u thumbs up Part A: Multiple Choice (12marks) Identify the choice that best completes the statement or answers the question. A hockey puck...

. A beanbag is thrown from a window located 10.0 m above the ground with an initial horizontal velocity of 3.0 m/s. a. How long will it take the beanbag to reach the ground? That is, what is its time...

1 Exercise 3: Lift and Airfoils The first part of this week's assignment is to choose and research a reciprocating engine powered (i.e. propeller type) aircraft. You will further use your selected...

Read and answer the question below. EMBRACE DEMOGRAPHICS AND SOCIETAL CHANGES Using Differences to Drive Value Force 7: Demographics and Societal Changes. One of the most important forces that is...

MTlA - Forces in Motion Rationale As engineers, it is important to understand how energy can be converted from one form to another and how losses affect the efficiencies of systems. In this...

Please answer the following questions after reading Lectures 3,4 and 5: 1. Please list, describe and explain each one of the five major types of taxes as discussed in Lectures 3,4, and 5: What is the...

Hello, I just need a head start. I am a bit confused and need an example so i can continue. So Please explain as much as possible. Thank you!. Question: Discuss in detail how to implement the...

Define Management or What is Management?

What do you understand by MBO?

Arndt, Incorporated reported the following for 2024 and 2025 ($ In millions): Revenues Expenses 2024 $ 942 798 Pretax accounting income (income statement) Taxable income (tax return) $ 144 $ 102 2025...

What is meant by planning or define planning?

Define span of management or define span of control ?

A U.S. company owns an 80% interest in a company located on Mars. Martian currency is called the Martian Credit. During the year the parent company sold inventory that had cost $24,500 to the...

Kims Konstructions has assembled the following data for a proposed straw-reinforced brick maker (SRBM): SRBM Cost: $26,000 Life: 5 years Revenue (p.a.) $11,000 Operating Expenses (p.a.) $3,000...

An infinite plane in the xz? plane carries a uniform surface charge density ? 1 = 65 nC/m 2 . A second infinite plane carrying a uniform charge density ? 2 = 45 nC/m 2 intersects the xz? plane at the...

A particle has a constant acceleration of a = (6 i + 4 j) m/s 2 . At time t = 0, the velocity is zero and the position vector is r 0 = 10 m i. (a) Find the velocity and position vectors at any time...

Two uncharged conducting spheres with their conducting surfaces in contact are supported on a large wooden table by insulated stands. A positively charged rod is brought up close to the surface of...

When creating a presentation, many public-speaking instructors will tell you to develop a strong opening or attention getter to your presentation as well as a good summary and finish. What aspect of...

Henry Gustav Molaison, infamously known as H.M., was unable to form new declarative memories. He suffered from what psychologists call a. anterograde amnesia. b. psychogenic amnesia. c. retrograde...

Your English instructor has given you an assignment to write down your most favorite memory from when you were 12 months old. What might you tell him? a. Students will probably not be able to recall...