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29 August, 19:56

If you placed a cylinder with a 0.25 m radius in the middle of a record player that spins at 4.7 rad/s, what is its angular momentum? The cylinder has a mass of 2.0 kg.

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  1. 29 August, 21:15
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    0.29 kg m² / s

    Explanation:

    Angular momentum is the product of moment of inertia and angular velocity.

    L = I ω

    For a solid cylinder, I = ½ m r².

    L = ½ m r² ω

    L = ½ (2.0 kg) (0.25 m) ² (4.7 rad/s)

    L = 0.29 kg m² / s
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