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प्रश्न
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
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उत्तर
Work is done against the force.
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संबंधित प्रश्न
Is it possible that no transfer of energy may take place even when a force is applied to a body?
The moment of a force 10 N about a point 0 is 4 Nm. Calculate the distance of point of application of force from the point 0.
What do you understand by work? Is work a scalar or a vector quantity?
State two conditions for work to be done.
Derive a relation between the S.I. and C.G.S. unit of force.
A coolie carrying a load on his head and moving on a frictionless horizontal platform does no work. Explain the reason why.
The world record for weight lifting was held by Sergei Didyk of the USSR. He lifted 261 kg to a height of 2.3 m in 4s; find:
(a) Weight lifted by him
(b) Work done by him
(c) Power developed by him. (g = 10m/s2)
State the C.G.S. unit of work. How it is related to its S.I. unit?
