JEE · NEET Previous Year Question
A gramophone record is revolving with an angular velocity ω. A coin is placed at a distance r from the center of the record. The static coefficient of friction is µ. The coin will revolve with the record if
Topic: NEET PYQ
Answer: C. Full step-by-step solution below.
- Ar =
- B
- C
- D
Correct answer: C
Solution
(c) The coin will revolve with the record, if Force of friction ³ Centrifugal forceµmg ³
or
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