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A record is rotating in a horizontal plane at 33 rpm about a friction axis. The...

A record is rotating in a horizontal plane at 33 rpm about a friction axis. The record can be approximated as a disk 30 cm in diameter massing 125 grams. A small piece of clay (5 grams) is dropped vertically and sticks on the record 10 cm from the axis.

a)What is the angular speed after the clay sticks?

b) After a while, the clay dries out and starts to slide outward on the record. Just as it reaches the edge of the record, it sticks again. What is the angular speed then?

c) After more time drying, the clay slides off the record flying tangentially. What is the final angular speed of the record?

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Answer #1

In this problem no external torque is present, so angular momentum remains constant.a) The 5 at lo Com from the axis 3 ヲw 1-15625 xo3 旦 -上5187 5 XIā3 3 /-51875 3. TEs C) Lhern clay Plying ta

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