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Physics
Mechanics
Rotational motion
A spinning flywheel has rotational inertia I = 401.9 kg · m2. Its angular velocity decreases from 20.5 rad/s to zero in 257.1 s due to friction. What is the frictional torque acting?
1 answer
0 =ω - ε•t.
ε = ω/t.
M=I• ε
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