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प्रश्न
What do you mean by uniform circular motion?
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उत्तर
When a particle moves with a constant speed in a circular path, its motion is said to be the uniform circular motion.
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संबंधित प्रश्न
A body of mass m is moving with a uniform velocity u. A force is applied on the body due to which its velocity changes from u to v. How much work is being done by the force?
State the condition when the work done by a force is negative. Explain with the help of examples.
A man spends 7.4 kJ energy in displacing a body by 74 m in the direction in which he applies force, in 2.5 s. Calculate the power spent (in H.P) by the man.
State and define the unit of force in the S.I. system.
How is 1 kgf related to the SI unit of force?
What is the work done by the gravitational force on the moon that revolves around the earth?
A machine raises a load of 750 N through a height of 16 m in 5 seconds. Calculate the power at which the machine works.
A force of 1 kgf displaces a body by a distance of 10 cm
(i) in direction of force,
(ii) normal to the force
(iii) at an angle of 60° to the direction of the force.
Calculate the amount of work done in each case. (Take: g = 9.8 ms−2 )
For the following scenario, state whether the work done by gravity is positive, negative, or zero.
A person walks on a levelled road.
