Chat with AIExam 10: Rotation of a Rigid Object About a Fixed Axis
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A uniform rod (mass = 1.5 kg)is 2.0 m long.The rod is pivoted about a horizontal,frictionless pin through one end.The rod is released from rest in a horizontal position.What is the angular speed of the rod when the rod makes an angle of 30° with the horizontal? (The moment of inertia of the rod about the pin is 2.0 kg⋅m2).
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(42) The turntable of a record player has an angular velocity of 8.0 rad/s when it is turned off.The turntable comes to rest 2.5 s after being turned off.Through how many radians does the turntable rotate after being turned off? Assume constant angular acceleration.
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