A uniform solid cylinder of mass and radius is released from rest at the top of a…

PHYSICS · Multi-part · A Level · Physics · Engineering physics · Engineering physics

Problem

A uniform solid cylinder of mass 2.0 kg2.0\,\text{kg} and radius 0.10 m0.10\,\text{m} is released from rest at the top of a 30∘30^{\circ} rough incline that is 1.20 m1.20\,\text{m} long (measured along the slope). The coefficient of static friction is large enough to prevent any slipping during the motion. The cylinder’s moment of inertia about its central axis is I=12Mr2I=\tfrac12 M r^{2}. Neglect air resistance. (a) Calculate the magnitude of the cylinder’s linear acceleration as it rolls down the incline. (b) Determine the magnitude of its angular acceleration. (c) Find the time required for the cylinder to reach the bottom of the incline. (d) Does the value obtained in part (a) depend on the cylinder’s mass? Provide a brief explanation based on your calculations.

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