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प्रश्न
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उत्तर
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संबंधित प्रश्न
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A sailboat is moving due to wind energy.
1 J = ______ calorie.
A boy weighing 25 kgf climbs up from the first floor at height 3 m above the ground to the third floor at height 9m above the ground. What will be the increase in his gravitational potential energy? (Take g = 10 N kg -1)
The work done on an object does not depend on the :
State the conditions of equilibrium for a rigid body.
What do you mean by a kilo joule?
No work is done by a man moving on a horizontal road while carrying a box on his head. Explain.
A woman pulls a bucket of water of total mass 5 kg from a well which is 10 s. calculate the power used by her.
State whether work is done or not, by writing yes or no, in the following case:
A man pushes a wall.
