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प्रश्न
When a stone tied to a string is rotated in a horizontal plane, the tension in the string provides ______ force necessary for circular motion.
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उत्तर
When a stone tied to a string is rotated in a horizontal plane, the tension in the string provides centripetal force necessary for circular motion.
संबंधित प्रश्न
State two condition for a body acted upon by several forces to be in equilibrium.
Give scientific reason for the following:
When a man climbs a slope he bends forward.
A faulty balance of equal arms but pans of unequal weight is used to find the weight of a body. By the method of double weighing the weights are found as 8 kg and 8.2 kg. Find the actual weight of the body.
State two conditions when the work done by a force acting on a body is zero.
What do you mean by static equilibrium? Give one example.
What is a couple?
One end of a spring is kept fixed while the other end is stretched by a force as shown in the diagram.

(i) Copy the diagram and mark on it the direction of the restoring force.
(ii) Name one instrument which works on the above principle.
A boy of mass 30 kg is fitting at a distance of 2 m from the middle of a see-saw. Where should a boy of mass 40 kg sit so as to balance the see-saw?
Give one example of static equilibrium.
Give one example of dynamic equilibrium.
