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Q.

A chain of 100 links is 1 m long and has a mass of 2kg. With the ends fastened together it is set rotating at 3000 rpm, in a horizontal plan. The centripetal force (in N) on each link is ( take π=3.14)

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answer is 314.

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Detailed Solution

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M=2kgl=1m

Mass of each link =M100=0.02kg

Radius =l2π=12π

ω=3000rpm=3000×2π60rad/sec

F=mrω2

F=0.02×12π×(100π)2

=100π

F=314N

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