A particle of mass m is attached to a light string which passes through a hollow tube…
Physics · JEE Advanced · NTA Exams — Rotational Motion
A particle of mass m is attached to a light string which passes through a hollow tube. The tube is held 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 to r. What is conserved?
- angular momentum
- linear momentum
- Kinetic Energy
- None of these
Answer
(A) angular momentum
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