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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