Recent content by Number47

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    Stopping a potter's wheel with a wet rag (angular momentum and friction)

    Homework Statement A potter's wheel having a radius 0.55 m and a moment of inertia 11.6 kg·m2 is rotating freely at 55 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 66 N. Find the effective coefficient of kinetic...
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    Bucket on a spool falls into a well (angular velocity)

    Homework Statement Use conservation of energy to determine the angular speed of the spool shown in the figure below after the 3.00 kg bucket has fallen 3.90 m, starting from rest. The light string attached to the bucket is wrapped around the spool and does not slip as it unwinds. relevant...
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    Bullet fired at a Hinged door (rotational velocity problem)

    momentum would be conserved then. so do i set it up as initial linear momentum equals final rotational momentum?
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    Bullet fired at a Hinged door (rotational velocity problem)

    so how should i set this up then? as 2 rotational velocities with different moments of inertia?
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    Bullet fired at a Hinged door (rotational velocity problem)

    Homework Statement A 0.005-kg bullet traveling horizontally with a speed of 1.00 103 m/s enters an 17.2-kg door, imbedding itself 9.8 cm from the side opposite the hinges as in the figure below. The 1.00-m-wide door is free to swing on its hinges. relevant img...
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