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pully89

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Ok, I have a a motor, so I know the speed in rev/s. The motor is going to power a wheel, so I have a second moment of area?, (I), and I want to calculate the torque. I know I can do this by using T=I*[tex]\alpha[/tex]. The speed of the motor is 2500 revolutions per second. So [tex]\omega[/tex] is 2[tex]\pi[/tex]f, which is 261.8 radians per second, but from here I am confused on how to work out the angular acceleration, although I think that [tex]\alpha[/tex]=[tex]\Delta[/tex][tex]\omega[/tex]/[tex]\Delta[/tex]t, but I'm still not sure how to get alpha, can anyone help?

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