Gravel is falling on a conveyor belt at the rate of 12kg s^(-1). The extra power required to move the belt with a velocity of 5ms^(-1) is

Gravel is falling on a conveyor belt at the rate of 12kg s^(-1). The e

1.	Gravel is falling on a conveyor belt at the rate of 12kg s^(-1). The extra power required to move the belt with a velocity of 5ms^(-1) is
Answer» 15W 300W 30W 150W Answer :B