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[answered] A wheel of diameter 25.0 cm starts from rest and rotates wi


A wheel of diameter 25.0?cm?starts from rest and rotates with a constant angular acceleration of 4.50?rad/s2?. At the instant the wheel has completed its second revolution, compute the radial acceleration.

What I've done:

w2=w02+2a(theta-theta0)

w2=0 + 2(4.5rad/s2)(4pi)

w2=113 rad2/s2

arad=w2/r

arad=(113 rad2/s2) /(0.125 m) = 905 m/s2


It's saying I have the wrong answer, but I can't figure out what I should change


Thank you in advance for your help!


First we need to find the angular velocity of the wheel, for that we'll use Where

 

angular acceleration and

 

would be is the wanted angular velocity, the initial angular velocity, the rotation angle....

 


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