9. In 35 s ... a pump delivers 55,000 g of oil into a barrel on a platform 25 m

above the pump intake pipe.

a. Calculate the work done by the pump.

25m

b.

Calculate the power of the pump.

The work done by the pump is 13475 J. The power of the pump is 385 W.

Explanation:

When a force causes a body to move work is being done on the object by the force. Work is the measure of energy transfer when a force moves an object through a distance. The work done is the product of mass, gravity, and height.

Work done = m * g * h

= 55 * 9.8 * 25

Work done = 13475 J.

Power is defined as the rate of doing work with time.

Power = work done / time

= 13475 / 35

Power = 385 W.