a lift is designed to carry a load of 4000 kg through 10 floors of a building averaging 6 m per floor in 10 sec. calculate the power of the lift
Mass = 4000 kg
Weight (W) = 4000 * 10 = 40,000 N {Taking g = 10 m/s2}
No. of floors = 10
Height in each floor = 6 m
Height of all floors = 10 * 6 = 60 m
Time taken = 10 sec.
Work done = mgh = Wh = 40000 * 60 = 2400000 J
Power = Work / Time = 2400000 / 10 = 240000 W = 2400 kW
Weight (W) = 4000 * 10 = 40,000 N {Taking g = 10 m/s2}
No. of floors = 10
Height in each floor = 6 m
Height of all floors = 10 * 6 = 60 m
Time taken = 10 sec.
Work done = mgh = Wh = 40000 * 60 = 2400000 J
Power = Work / Time = 2400000 / 10 = 240000 W = 2400 kW