Question

2. A disk rotates about shaft AB at a nonconstant rate . At the same time, the outer frame rotates about

the vertical axis at a rate Q. Find and a of the disk. Even though is constant, is there any frame

angle for which the angular acceleration of the disk is identically zero? Also, state whether your

answer for a is valid for all time or only for the instant shown.

disk

B

(0)

Ω

0

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