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प्रश्न
In the following case write yes, if the work is being done and no if no work is being done.
A boy climbing up a staircase.
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उत्तर
Yes.
संबंधित प्रश्न
Work is said to be done by a forte only when ................
A coolie is moving on a road with a luggage on his head. Does he perform work against the force of gravity? Give reason for your answer.
Name the forms of energy which a wound-up watch spring possesses.
Find the kinetic energy of a body of mass 1 kg moving with a uniform velocity of 10 m s-1.
The velocity of a car increases from 54 km/hr to 72 km/hr. How much is the work done if the mass of the car is 1500 kg?
Define 'joule'.
Name the physical quantity whose MKS units are kgm2s-3.
What is power? How do you differentiate kilowatt from kilowatt-hour? The Jog Falls in Karnataka state are nearly 20 m high. 2000 tonnes of waterfalls from it in a minute. Calculate the equivalent power if all this energy can be utilized? (g = 10 m s–2)
