Question

A small motor runs a lift that raises a load of bricks weighing 836 N to a height of 10.7 m in 23.2 s. Assuming that the bricks are lifted with constant speed, what is the minimum power the motor must produce?

Answer 1

To calculate the minimum power the motor must produce, we use the formula: power = work / time. The power required to raise the load of bricks is 385.71 W.

Step-by-step explanation:

To calculate the minimum power the motor must produce, we need to use the formula: power = work / time.

In this case, the work done is equal to the weight of the bricks multiplied by the height they are lifted: work = weight * height.

Substituting the given values, we have: work = 836 N * 10.7 m = 8945.2 J.

The time taken is 23.2 s.

Therefore, the power is: power = 8945.2 J / 23.2 s = 385.71 W.