Intro to Calculating Work Video Lessons

Concept

Problem: Part AYou push very hard on a heavy desk, trying to move it. You do work on the desk:a. whether or not it moves, as long as you are exerting a force.b. never-it does work on you.c. only if it starts moving.d. only if it doesn’t movee. None of the above

FREE Expert Solution

We are required to explain the concept of work.

Work:

$\overline{){\mathbf{W}}{\mathbf{=}}{\mathbf{F}}{\mathbf{·}}{\mathbf{d}}}$

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Problem Details

Part A

You push very hard on a heavy desk, trying to move it. You do work on the desk:

a. whether or not it moves, as long as you are exerting a force.

b. never-it does work on you.

c. only if it starts moving.

d. only if it doesn’t move

e. None of the above