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प्रश्न
Work done by this force at any instant is ______.
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उत्तर
Work done by this force at any instant is zero.
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संबंधित प्रश्न
When do we say that work is done?
An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?
Define 1 joule 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.
A bullet is of mass 'm' g and is moving with a velocity 'v' m/s. Find the kinetic energy of the bullet when
(a) The mass is doubled,
(b) The velocity is tripled.
Give an example
Light energy changes to electrical energy.
