A motor with a power of 115 watts is connected to a flywheel

A motor with a power of 115 watts is connected to a flywheel. How long, in units of hours, must the motor operate to transfer 322,000 joules to the flywheel?

Solution

1 watthour =3600J

given 322000J of energy in watthour =322000/3600 =89.44watthour

115 x time =89.44

time =0.778hours