# physics

A flywheel is rotating at speed of 1200 rpm its angular acclaration is 4 rad/s how many rotation it will be done before coming to rest

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1. I assume you mean deceleration, or else it is speeding up.

Also, acceleration is measured in rad/s^2.

1200 rpm is 2400π/60 rad/s = 40 rad/s

so, if it loses 4 rad/s every second, how long will it take to lose all 40 rad/s?

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2. Is 40 ans correct???????????

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3. NO!

40rad/s
---------------- = 10s
4 rad/s^2

how could you possibly have come up with 40?

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