Homework Help: Physical Science

Posted by Rodolfo Brown on Monday, May 2, 2011 at 8:52pm.

A cyclist applies a force of 250 N to the pedals of a bicycle. If the rear wheel applies a force of 200 N to the road surface. What is the mechanical advantage of the bicycle?

Physical Science - drwls, Monday, May 2, 2011 at 9:15pm
M.A. = (delivered force)/(applied force)
= 0.80

What you lose in applied force, ratio-wise, you gain in speed.

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