Question

An electric motor is used to lift a load. When 7000 J of electrical energy are supplied to the motor the load gains 3100 J of gravitational potential energy. The amount of wasted energy by the motor is

Answer 1

Answer:

W = 3900 J

Explanation:

Given that,

Electrical energy supplied = 7000 J

Gain in gravitational potential energy = 3100 J

We need to find the amount of wasted energy. Let it is W. So,

W = 7000 J - 3100 J

= 3900 J

So, the amount of wasted energy by the motor is 3900 J.