7. 17 A 57-kg rollerblader skates across a skating rink floor. The graph below s

Question

7. 17

A 57-kg rollerblader skates across a skating rink floor. The graph below  shows the net external force component F cos ? along the displacement as a function of the magnitude of the displacement d. Determine the following.

    (a) work done by the net force component F cos ?  acting on the rollerblader as he moves from 0 to 5.0 m
1      J

    (b) work done by the net force component F cos ?   acting on the rollerblader from 5.0 m to 10.0 m
2      J

A 57-kg rollerblader skates across a skating rink floor. The graph below shows the net external force component F cos ? along the displacement as a function of the magnitude of the displacement d. Determine the following. WebAssign Plot (a) work done by the net force component F cos ? acting on the rollerblader as he moves from 0 to 5.0 m (b) work done by the net force component F cos ? acting on the rollerblader from 5.0 m to 10.0 m

Explanation / Answer

We know that work done = f dot product s=f

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