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Two wheels of M.I. 3kg m^(2) and 5 kg m^...

Two wheels of M.I. 3kg `m^(2)` and 5 kg `m^(2)` are rotating at a rate of 600 rpm and 800 rpm respectively in opposite directions. If are coupled so as to rotate with the same axis of rotation, the resultent speed of rotation (in rpm)

A

275

B

350

C

210

D

420

Text Solution

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The correct Answer is:
A
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