A boy is whirling a stone tied with a string in a horizontal circular path. If the string breaks, then the stone__

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will continue to move in the circular path.

will move along a straight line towards the centre of the circular path.

will move along a straight line tangential to the circular path.

will move along a straight line inclined to the circular path away from the boy.

answer is C.

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Detailed Solution

If the string of a whirling stone breaks, then the stone will move along a straight line tangential to the circular path.
When the boy whirls a stone, it will apply a centripetal force toward the centre and a centrifugal force that will be directed outward. The direction of the centrifugal force is always tangential to the periphery of the circular path. When the string break, centripetal force does not exist anymore, only the centrifugal force remains. So the net force on the stone is the centrifugal force that acts outward in the tangential direction. So the stone will move along a straight line tangential to the circular path.

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