Q 32: 32 An engine develops 10KW of power How much time will it take to - Physics - Work Energy And Power

Question

Q 32:

32 An engine develops 10KW of power How much time will it take to
lift a mass of 200kg to a height of 40m (g=10ms-2)

1) 4s 2) 5s 3) 8s 4) 10s

Pintu B. · Accepted Answer

Dear Student ,

Power = 10 KW = 10000 W

Mass = 200 kg

Height = 40 m
Power = Work Time

10000 = 200×9 8×40time 
Time = 200×9 8×4010000 = 7
84 seconds

Regards

Q.32: 32. An engine develops 10KW of power. How much time will it take to lift a mass of 200kg to a height of 40m. (g=10ms-2) 1) 4s 2) 5s 3) 8s 4) 10s