Rolly-Polly

Level pending

Angle of inclination of an inclined plane is 30 degrees with the horizontal. A uniform circular disc of mass 10kg and radius 289.36m is rolling up the plane. If coefficients of both static and sliding friction are 'u', and only frictional and gravitational forces are effective, what is the force of friction acting on the disc (in SI units)? Attach a minus (-) sign before your answer if you find that friction acts downwards. Take gravitational acceleration = -10 m/s ^ 2

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