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प्रश्न
What is the SI unit of work?
एक शब्द/वाक्यांश उत्तर
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उत्तर
Joule
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
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संबंधित प्रश्न
.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.
A bullet of mass 0.5 kg slows down from a speed of 5 m s-1 to that of 3 m s-1. Calculate the change in kinetic energy of the ball.
What is meant by a translational motion? Give one example.
A uniform circular motion is an accelerated motion. Justify it.
What do you mean by the term 'work'?
Why is the work done on an object moving along a circular path zero?
What is the relation between 1 H.P. and 1 kW?
A horse exerts a pull on a cart of 300 N so that the horse-cart system moves with a uniform speed 18 km/h on a level road. Calculate the power developed by the horse in watt and also find its equivalent in horse power.
What do you understand by ‘potential energy’? Give three examples to illustrate your answer.
State the energy changes which take place when A toy car with a wound spring moves on ground.
