POD32 Prob#2) Review Problem A child applies a constant force of 35N to the hand

Question

POD32 Prob#2) Review Problem A child applies a constant force of 35N to the handle of a wagon that she is pulling, so that the handle is at an angle of 25° to the horizontal a. If she pulls the wagon and there is no friction (except that required for the wheels to roll) and moves the wagon 10 meters, how much work did she do? b. What if, as she is pulling the wagon, the wheels lock up, and she has to drag the wagon over the same distance across the ground which has a coefficient of friction of p-0.33, compute the work that she has to do over the same distance

Explanation / Answer

a) Workdone by her = F*d*cos(theta)

= 35*10*cos(25)

= 317.2 J

b) Workdone by her remains same.

Workdone by her = F*d*cos(theta)

= 35*10*cos(25)

= 317.2 J

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