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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?

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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