(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A car, which weighs 1000 N, travels over a bumpy road with a constant speed. Gravity acts. The road at point B is in the shape of a circle with a radius of 100 meters.

http://online.physics.uiuc.edu/cgi/courses/shell/common/showme.pl?courses/phys211/oldexams/exam1/sp08/fig21.gif [Broken]

Which one of these statements correctly relates the force of the car on the road at points A (a valley) and B (the top of a hill)?

(a) The magnitude of the force of the car on the road is larger at point A than it is at point B.

(b) The magnitude of the force of the car on the road is larger at point B than it is at point A.

(c) You need to know the road radius at point A to answer this question.

2. Relevant equations

a = v^2/r^2 = w^2*r

3. The attempt at a solution

I thought at the point A, it's considered as the lowest point of circular path, while

the point B is considered as the highest point.

So, at A Weight is somewhat canceled with the tension(thinking about uniform circular path) but at B weight is added to the tension..

That's why i thought B has larger force than at point A....

What's wrong in my attempt..?

Please help me out here....

Thanks.

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# Homework Help: Uniform Circular Motion.

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