A coin kept on a rotating disc with its centre 5 cm away from the centre of the disc, just begins to slip when the frequency of rotation of the disc reaches 60 r.p.m. The coefficient of friction is,(g=9.8 m/s^2).

A coin kept on a rotating disc with its centre 5 cm away from the cent

1.	A coin kept on a rotating disc with its centre 5 cm away from the centre of the disc, just begins to slip when the frequency of rotation of the disc reaches 60 r.p.m. The coefficient of friction is,(g=9.8 m/s^2).
Answer» 0.1012 0.02012 0.3012 0.4012 Answer :B

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A coin kept on a rotating disc with its centre 5 cm away from the centre of the disc, just begins to slip when the frequency of rotation of the disc reaches 60 r.p.m. The coefficient of friction is,(g=9.8 m/s^2).

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