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Posted by on Sunday, November 18, 2012 at 7:37am.

A circular disk of radius 30 cm is rotating with an angular velocity of 2 radians / s. What is the tangential velocity of a point on the rim of the disk? What is its centripetal acceleration?

  • Physics - , Sunday, November 18, 2012 at 8:07am

    The tangential velocity is R*w = 60 cm/s.
    The centripetal acceleration is R*w^2
    = 120 cm/s^2
    They may want you to convert the answers to m/s and m/s^2

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