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प्रश्न
How much work is done when a force of 2 N moves a body through a distance of 10 cm in the direction of force?
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उत्तर
Force, (F) = 2N
Distance travelled by the body, (S) = 0.1 m
We have a relation as, W = FS
So,
W = 2 × 0.1
= 0.2 J
Therefore , the work done is 0.2 J
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संबंधित प्रश्न
Explain degradation of energy by taking two examples of your daily life.
A person of mass 50 kg climbs a tower of height 72 metres. Calculate the work done. (g = 9.8 m s−2).
Choose one or more correct alternatives.
For work to be performed, energy must be ______.
- transferred from one place to another
- concentrated
- transformed from one type to another
- destroyed
Is work done a scalar or a vector physical quantity?
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.
In the following case write yes, if the work is being done and no if no work is being done.
A coolie standing with a heavy load on his head
