A pulley of radius 400 mm is used to drive a belt. When the difference in tension between the tight and slack sides of the belt drive is 2 kN and the pulley is rotating at 5 rev/s, what is (a) the...

A pulley of radius 400 mm is used to drive a belt. When the difference in tension between the tight and slack sides of the belt drive is 2 kN and the pulley is rotating at 5 rev/s, what is (a) the torque applied to the pulley, (b) the power transmitted?