- #1

- 71

- 2

## Homework Statement

The radius for the inside of a curve is half the radius for the outside. With 2 cars of equal mass, car A travels on the inside and car B travels on the outside at equal speed. Which statement is correct?

a. The force on A is half the force on B

b. The force on B is half the force on A

c. A 4 times of B

d. B 4 times of A

## Homework Equations

Fc = m*v

^{2}/R

v = 2piR/T

## The Attempt at a Solution

I substituted 2piR/T into v

^{2}in the centripetal force equation, and then got

Fc = m*4pi

^{2}R/T

^{2}

So since the inside radius of half of the outside, the force on A should be half of that on B, which is answer a.

But the answer is apparently b.

But doesn't the equation show that it should be a?