Questions
An engine develops 10 kW of power. How much time will it take to lift a mass of 200 kg to a height of 40 m.
detailed solution
Correct option is C
P=mght=10×103⇒t=200×40×1010×103=8 secTalk to our academic expert!
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A car of mass ‘m’ is driven with acceleration ‘a’ along a straight level road against a constant external resistive force ‘R’. When the velocity of the car is ‘V’, the rate at which the engine of the car is doing work will be
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