Finding out the moment of inertia of the pulley
A 2.50 kg mass is attached to a light cord that is wrapped around a pulley of radius 3.45 cm, which turns with negligible friction. The mass falls at a constant acceleration of 3.85 m/s2. Find the moment of inertia of the pulley.
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For comparison, a .22 caliber bullet has a mass of 2.6 g and, starting from rest, exits the barrel of a gun with a speed of 409 m/s. Determine the work done to launch the motion of both the hammer and the bullet.
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Suppose she starts at the top of the wave with a speed of 1.7 m/s and moves down the wave until her speed increases to 8.5 m/s. The drop in her vertical height is 2.6 m. If her mass is 59 kg, how much work is done by the (nonconservative) force of
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