Question

A lawn mower is pushed a distance of 100 ft. Along a horizontal path by a constant force of 60 lbs. Yhe handle of the lawn mower is held at a downward angle of 45° toward the horizontal. Explain what each value in this situation represents in relation to the formula w=F•PQ=||F||•||PQ||costheta. Then find the work done pushing the lawn mower

Answer 1

In the formula,

w=F.PQ=|F|*|PQ|cosΘ

F=force=60lbs
PQ=distance covered=100ft
Θ=angle=45°

w=(60)(100)cos(45°)
w=4242.64 lb.ft