A person holds an 80-N weight 2 m above the floor for 30 seconds.The power required to do this is:

Question

Quizplus · Accepted Answer

Holding an object stationary does not require work to be done since work is defined as force applied over a distance (W = F*d). Since the distance is zero in this case (the weight is not moving), the work done is zero. Power is defined as work done per unit time (P = W/t), so if no work is done, the power required is also zero. None of the given options correctly states this, so the correct answer is E) none of these.

A Person Holds an 80-N Weight 2 M Above the Floor