Question

the power of a motor is 40 kW. At what speed can the motor raise a load of 40, 000 N

Answer 1

Answer:

Power = 40 kW = 40000 W , Force = 40,000 N 

As, Power= force x velocity 

       ∴  40,000 = 20,000 x v

        ⇒ v = 40,000/ 40,000

        ⇒ v = 1m/s

Therefore at the speed of 1 m/s speed can raise a loud of 40,000 N. 

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Answer 2

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