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प्रश्न
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उत्तर
If 1 joule of work is done in 1 second, the power is said to be 1 watt.
1 H.P. = 746 watt
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संबंधित प्रश्न
Work done by a boy depends on the time in which he does work.
A force of 30 N acts on a body and moves it through a distance of 5 m in the direction of force. Calculate the work done by the force.
In which of the following cases, is work being done?
(i) A man pushing a wall.
(ii) a coolie standing with a load of 12 kgf on his head.
(iii) A boy climbing up a staircase.
Express joule in terms of erg.
.A man raises a box of mass 50kg to a height of 2m in 20s, while another man raises the same box to the same height in 50s. Compare:
(i) the work done, and
(ii) the power developed by them.
Can work done be zero even if force acts on the body?
Name the physical quantity whose MKS units are kgm2s-3.
The weights of two bodies are 2.0 N and 2.0 kgf respectively what is the mass of each body?
