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Unformatted text preview: 3. Baseball bats are typically 1 kg in weight with a radius of gyration of .62 m. A certain player normally swings a regular bat with an angular velocity of 420/s, but interestingly during one game is suddenly able to swing with a bat speed of 530/s. It is discovered that the bat he is using was corked (hollowed out) in order to increase swing speed. Assuming the bat was the regular length and he swung with the same momentum, how much did the corked bat weigh? 4. The bicep muscle inserts on the radius (bone) 2 cm from the elbow at a 35 angle. What force must the bicep exert to create an angular acceleration of 100/s^2 in the arm if the arm has a moment of inertia equal to .14 kgm^2?...
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- Winter '11