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प्रश्न
The S.I. unit of work is
पर्याय
second
metre
joule
newton
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उत्तर
joule
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संबंधित प्रश्न
Derive a relationship between S.I. and C.C.S. unit of work
Work done = Force × ........................................
The moon is revolving around the earth in a circular path. How much work is done by the moon?
State the S.I. unit of energy.
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 power of a motor is 40 kW. At what speed can the motor raise a load of 20,000 N?
What happens to the work done when the dispacement of body is at right angles to the direction of force acting on it? Explain your answer.
Name the force acting away from the centre of circular path.
A girl of mass 40 kg runs a height of 80 stairs, each 25 cm high with a load of 20 kg on her head in 25 sec. If g is 10 m/s2, find:
(i) Gravitational force acting on the girl.
(ii) Work done by her.
(iii) Useful work done by her.
(iv) Her power in watt.
