An escalator is used to move `5` people (`60kg` each) per minute from the first floor of a department store to the second floor. `20m` above. Neglecting friction calculate the power required ?

A conveyor belt is moving horizontally with a uniform velocity of 2 m/sec. Material is dropped at one end at the rate of 5 kg/sec and discharged at the other end. Neglecting the friction, the power required to move the belt is-

A pump is required to lift 600 kg of water per minute from a well 25 m deep and to eject it with a speed of 50ms^(-1) . Calculate the power required to perform the above task ? (g=10 m " sec"^(-2))

A motor pump-set lifts 300kg of water per minute from a well of depth 20m and delivers to a height of 20m.Then its power is ?

A girl of mass 35 kg climbs up from the first floor of a building at a height 4 m above the ground to the third floor at a height 12 m above the ground. What will be the increase in her gravitational potential energy? [ g=10ms^(-2) ]

A pump is required to lift 1000 kg of water per minute from a well 20 m deep and ejects at a speed of 20 m/s. The power of engine is

A pump is required to lift 1000 kg of water per minute from a well 20 m deep and ejects at a speed of 20 m/s. The power of engine is

A pump is required to lift 600 kg of water per minute from a well 25 m deep and to eject it with a speed of 50 ms^(-1) . The power required to perform the above task is