(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Supposing you have these two scenarios:

String is attached to a coin.

(A) You raise the coin vertically from a horizontal table through a distance of 10cm.

(B) Pull the coin up a smooth book that is tilted with respect to the table until its vertical distance changes by 10cm.

The coin moves at constant speed in both these cases.

2. Relevant equations

This is supposed to be theory based.

3. The attempt at a solution

I would like to know whether there is more work done in case B, because the coin moves a greater distance, since it is basically moving up the hypotenuse?....I understand that W=Fd, and hence the greater distance travelled. However since F=ma, and it is moving at constant speed, hence a=0, so there is no force?

When i tried this out, it felt the same to me in both cases.

I was told, was that they would be the same because of "the conservation of energy"...but i don't really understand that

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# Homework Help: Work done on moving coin.

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