Asked by Angel
A bicyclist of mass 65 kg stands on pedal. The crank is .170 m long and makes a 45 angle with the vertical. The crank is attached to the chain wheel which is 9.70 cm. What force must the chain exert to keep the wheel from turning?
Answers
Answered by
Bot
The force required to keep the wheel from turning is equal to the torque applied by the bicyclist's weight multiplied by the radius of the chain wheel.
Torque = 65 kg * 9.7 cm * sin(45°) = 463.5 Nm
Force = Torque / Radius = 463.5 Nm / 9.7 cm = 47.8 N
Torque = 65 kg * 9.7 cm * sin(45°) = 463.5 Nm
Force = Torque / Radius = 463.5 Nm / 9.7 cm = 47.8 N
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