1. The problem statement, all variables and given/known data 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 2. Relevant equations Fc = m*v2/R v = 2piR/T 3. The attempt at a solution I substituted 2piR/T into v2 in the centripetal force equation, and then got Fc = m*4pi2R/T2 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?