A bicycle is travelling along a flat straight road with a steady(adsbygoogle = window.adsbygoogle || []).push({});

horizontal velocity of 4m/s.

Assume the front and rear wheels have a radius of 0.3m and they

do not slip on the road.

a. How many rpms (revolutions/minute) do the wheels make?[1]

-4m/s *60sec/1min = 240m/min

Circumference: 2pi*r= 0.6pi = 1.884 m/rev

240m/min divided by 1.884m/rev = 127.4rpm

im pretty sure thats right...

b. A mosquito of mass m lands on the top of the wheel as it is going down the

road. When it is on the top of the wheel, what is the normal force felt by the

mosquito. Neglect the force of the air.[1]

-N-mg=ma

-N=ma+mg

N= -(ma+mg) <--- NOT 100% SURE ITS RIGHT.

c. Suppose a piece of mud flies off the very top of the wheel. What is it velocity, Vx and Vy with respect to the ground? Note definition of x-y coordinates. [1]

I HAVE NO IDEA WHERE TO START!!

d. How long will the mud take to reach the ground? [1]

THIS ONE EITHER...

e. If the bicycle stops using a constant breaking force over a distance of 10 m, what is the angular deceleration of the wheel?[1]

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# Homework Help: Physics Bicycle Problem!

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