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AP® Physics 1 & 2

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Expression for Work on Incline

APPH12-VNVF@C

Created for Albert.io. All rights reserved 2016.

A crate of weight $W$ is pushed up an incline by a force of magnitude $F$. The crate starts at the very bottom of the incline and is moved all the way to the top of the incline, along the distance $C$ shown in the diagram. The other dimensions of the incline are as shown.

Which one of the following is a correct expression for the amount of work done by gravity during the crate's motion?

A

$-FC$

B

$-FB$

C

$-WC$

D

$-WB$