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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 stone of mass m is rotated in a circular path with a uniform speed by tying a strong string with the help of your hand. Answer the following questions
1) Is the stone moving with a uniform or variable speed?
2) Is the stone moving with a uniform acceleration? In which direction does the acceleration act?
3) What kind of force acts on the hand and state its direction?
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- the work done, and
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State the condition when the work done by the force is positive
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.
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