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Instant center of rotation in plane motion

Please see attachments
ans.

a) 1.333 in. above A;
b) 085 ft./sec. right.
c) 60.2 ft. / sec. @48.4 deg.

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Solution Preview

a.) Let instant center of rotation is at height y from the bottom most point. At center of rotaion velocity will be zero.
hence,
5/y = 40/(12-y)
=> 40*y = 60 - ...

Solution Summary

The answer is given step-by-step and a diagram is attached.

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