Initial angular velocity of a circular disc of mass M is w 1 . Then two small spheres of…
Physics · JEE Advanced · NTA Exams — Rotational Motion
Initial angular velocity of a circular disc of mass M is w1. Then two small spheres of mass m each are attached gently to two diametrically opposite points on the edge of the disc. What is the final angular velocity of the disc?
- \(\left(\frac{M+m}{M}\right) \omega_{1}\)
- \(\left(\frac{M+m}{m}\right) \omega_{1}\)
- \(\left(\frac{M}{M+4 m}\right) \omega_{1}\)
- \(\left(\frac{M}{M+2 m}\right) \omega_{1}\)
Answer
(C) ( M M+4 m ) _ 1
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