Question

3] Tying a stone to one of a string and swinging it round and round and round by the other end of the string​

Answer 1

Answer:

When a stone is going around a circular path, the instantaneous velocity of stone is acting as tangent to the circle. When the string breaks, the centripetal force stops to act. Due to inertia, the stone continues to move along the tangent to circular path. So, the stone flies off tangentially to the circular path.

Answer 2

When we tie a stone to one side of a string and start swinging the string from the other side, the stone starts a circular motion which is of a uniform kind at that time. The direction of the velocity of the stone acts tangent to the circular path in which the stone was moving. While the centripetal force acts towards the centre of the string which is being held by the person. As he slows down the motion of the string, the stone starts slowing down but before it comes to rest, it revolves for two to three rounds because of inertia.

So this is how different forces act on the stone tied to a string and rotated in a circular motion.

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