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A small body of mass m is attached to a ...

A small body of mass m is attached to a light thread which passes through a hole at the centre of a smooth table. The body is set into rotation in a circle of radius `r_(1)` with a speed `v_(1)` . The thread is pulled down so that the radius of the path is changed to `r_(2)` . What will be the new linear speed and the new angular speed of the body ?

Text Solution

Verified by Experts

The correct Answer is:
`[(v_(1)r_(1))/(r^(2)),omega_(1)(r_(1)/(r_(2)))^(2)]`
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Knowledge Check

  • A small object of mass m is attached to a light string which passes through a hollow tube. The tube is hold by one hand and the string by the other. The object is set into rotation in a circle of radius R and velocity v. The string is then pulled down shortening the radius of path of r. What is conserved?

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