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प्रश्न
Is it possible that no transfer of energy may take place even when a force is applied to a body?
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उत्तर
Yes, when force is normal to displacement, no transfer of energy takes place.
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संबंधित प्रश्न
When a body is placed on a table top, it exerts a force equal to its weight downwards on the table top but does not move or fall
1) Name the force exerted by the table top
2) What is the direction of the force?
When does a force do work?
A body is moved in a direction opposite to the direction of force acting on it. State whether the work is done by the force or work is done against the force
A coolie X Carrying a load on his head climbs up a slope and another coolie Y carrying the identical load on his head move the same distance on a frictionless horizontal platform. Who does more work? Explain the reason.
State and define the S.I. unit of work.
An engine does 54,000 J of work by exerting a force of 6000 N on it. What is the displacement in the direction of the force?
A bullet fired against a window glass pane makes a hole in it without any cracks while a stone striking the same glass pane smashes it; explain with reason.
Derive a relation between the S.I. and C.G.S. unit of force.
