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The turntable of a record player can be modeled as a solid disk with a mass...

The turntable of a record player can be modeled as a solid disk with a mass of 1.86 kg and a diameter of 26 cm. It spins on frictionless bearings at an angular velocity of 33.8 rpm.

Find the moment of inertia for the turntable.

Find the tangential speed of a point on the rim of the turntable

. While the turntable is spinning at full speed, a record is placed on top of it. The record has a moment of inertia of 1.6×10-3 kg∙m2 and is initially at rest. What is the new angular velocity?

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Answer #1

(a) I, - m, R |-86 x (0.13)? - 0.0157 kgm? 2 Answer (b) v= RW 0.13 x (33.8 * 27 rads) to 0.46 m/s Answer Applying of conserv

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