- #1
Aarron Anderson
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OP has been reminded that they need to show their work when posting schoolwork questions
Homework Statement
How much torque is needed to change the speed of spinning rate of a 3.50 kg sphere with a radius of 7.50 m from 900. rpm to 200. rpm in 3.0 s? [-1924 -1.92 x 103 Nm]
Homework Equations
t = I * α
I = (2/5)mr^2
t = F * r
The Attempt at a Solution
just can't get a crack at it.[/B]