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2. A disk of moment of inertia I, mass M, and radius R rolls down a frictionless hill of height, h with a velocity w.
2. A disk of moment of inertia I, mass M, and radius R rolls down a frictionless hill of height, h with a velocity w. Given Idisk = 1/2 MR2. Find an expression for the height of hill - Express this only in terms of v and g. 3. A uniform meter stick is supported by a knife edge at the 50-cm mark. Neglect the mass of the meter stick. Mass A (4 kg) is hanging at 30-cm mark and mass B (6 kg) is hanging 80-cm. Where a third mass C (3 kg) should be hung to keep the stick in balance (equilibrium)? Draw a diagram - indicating all the forces and the direction of each torque
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