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OpenStudy (anonymous):
In pedaling a bicycle, a particular cyclist exerts a downward force of 90N during each stroke. If the diameter of the circle traced by each pedal is 36cm, calculate how much work is done in each stroke?
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OpenStudy (anonymous):
work done is given by dot product of force and displacement
OpenStudy (mos1635):
|dw:1335445685348:dw| W=Fx*Δl W=F*cosθ*R*dθ intrgrate from 0 to 2π
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