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प्रश्न
Name the forms of energy which a wound-up watch spring possesses.
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उत्तर
Elastic potential energy is possessed by wound up watch spring
संबंधित प्रश्न
State two factors on which the work done on a body depends.
Give reasons for the following A teacher moving around in the class is doing work but a child standing and reading a book is not doing any work.
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?
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
Define 'joule'.
A coolie, with a load of 30 kg on his head, walks on the platform. If he walks a distance of 60 m, what is the work done by him?
Calculate the work done when:
A 5 kg weight is lifted 10 m vertically. (g = 9.8 m/s2)
A water pump raises 50 kg of water through a height of 25 m in 5s. Calculate the power supplied by the pump (Take: g = 10 N kg−1).
