12.3. Model: Assume constant angular acceleration. Visualize:Solve:(a)Since,tarα=find first. With 90 rpm9.43 rad/s=and 60 rpm6.28 rad/s,=29.43 rad6.28 rad/s0.314 rad/s10 stωΔ−===ΔThe angular acceleration of the sprocket and pedal are the same. So ()( )220.18 m0.314 rad/s0.057 m/st=(b)The length of chain that passes over the sprocket during this time is
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