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  • A boy is whirling a stone tied with a string in a horizontal circular path. If the string breaks, the stone (a) will continue to move in the circular path (b) will move along a straight line towards the centre of the circular path (c) will move along a

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

(a) will continue to move in the circular path

(b) will move along a straight line towards the centre of the circular path

(c) will move along a straight line tangential to the circular path

(d) will move along a straight line perpendicular to the circular path away from the boy

Answers (1)

Ans. C

Sol.

If the boy is whirling a stone tied with a string in a horizontal circular path, the force by string is changing the direction of velocity.  This force is called Centripetal force.

If the string breaks, there will be no force to change the direction of velocity.

Therefore, the particle will move on a straight line, tangent to the circle with speed it had just before the breaking of string.

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infoexpert24

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