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An engine develops 10 kW of power. How m...

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 (`g=10(m)/(sec^2)`)`?

A

8 sec

B

4 sec

C

2 sec

D

6 sec

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The correct Answer is:
A
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MOTION-WORK, POWER & ENERGY -Exercise - 1
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  9. A particle moves with a velocity v=(5hati-3hatj + 6hatk) ms^(-1) under...

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  10. A body of mass m, accelerates uniformly from rest to V(1) in time t(1)...

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  11. A self-propelled vehicle of mass m, whose engine delivers a constant p...

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  14. Assume the aerodynamic drag force on a car is proportional to its spee...

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  18. A particle of mass m is rotating by means of a string in a vertical ci...

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  20. A body is tied up a string of length l and rotated in vertical circle ...

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