Homework Help: Physics

Posted by Ashley on Friday, February 8, 2013 at 6:00pm.

A person who weighs 506 N is riding a 94-N mountain bike. Suppose the entire weight of the rider plus bike is supported equally by the two tires. If the gauge pressure in each tire is 6.70 x 105 Pa, what is the area of contact between each tire and the ground?

Physics - drwls, Saturday, February 9, 2013 at 8:52am
(total Contact area)x(Gauge pressure)
= 2*(single tire Contact Area)x6.70*10^5 N/m^2
= Total wt.
= 600 N

Contact area = 4.48*10^-4 m^2
= 4.48 cm^2

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