Homework Help: Physics

Posted by Jill on Monday, January 25, 2010 at 9:15pm.

Whila riding a bike, a rider exerts a fore of 540 N on the pedal, which when attatched to a sprocket creates a radius of rotation of 0.18 m. How much torque does the rider exert on the sprocket?

I think I have to use the formula
torque=rFsin(x)
But I'm not sure if thats right or how to solve it.

Physics - drwls, Tuesday, January 26, 2010 at 12:39am
You can forget about the sin(x) here because they want you to assume that the force is applied perpendiculat to the pedal crank (even though this is hard to do for a full rotation of a bike pedal crank). So, just multiply 540 N by 0.18 m

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