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March 25, 2017

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The flywheel is initially at rest. A force of 250 N is applied tangentially to the rim, causing it to rotate about its central axis.

what is the energy acquired by it after 1 minute?

can anyone help me with this?

  • Physics - ,

    What is the KE after one minute:

    angular acceleration=torque/momentInertia
    torque= 250*r
    if the flywheel is a solid disk, moment of interia is 1/2 Mass*r^2 (Check that).

    angular acceleration= 500/rM

    then finally, angular velocity=acceleration*time
    wf= 500/rM * 60
    and KE= 1/2 I w^2= 1/2 (1/2 Mr^2)(500/rM)^2= and that is it. Check my work and thinking.

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