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Physics I Lab Manual 2011 80 - winds back up 2 If the...

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EXPERIMENT 11. ROTATIONAL DYNAMICS Consider an object of mass m at rest hanging from a string that is coiled around a pulley with an inner radius of r and an outer radius of R as shown to the right. 1. What is the torque exerted by the string on the pulley about its axis? If the mass begins to fall it will produce a constant angular acceleration on the pulley as the string is unwinding, and a constant angular acceleration of opposite sign as it
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Unformatted text preview: winds back up. 2. If the instantaneous angular displacement and angular velocity are as plotted on the above graphs, what is the magnitude of this constant angular acceleration (be sure to include the correct units)? 3. What was the maximum angular velocity of the pulley? 4. What was the angular displacement of the pulley as it was spinning up? 70...
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