A student has a weight of 650 N. While riding on a roller-coaster this same student has an apparent weight of 1.97 x 103 N at the bottom of a loop that has a radius of 17.0 m. The speed of the roller-coaster is

Question

I just need the forumla, doesn't even have to be manipulated.

Answer 1

At the bottom of the loop, the apparent weight is
1970 = (Weight) + (Centripetal force)
= 650 + M*V^2/R

M = W/g = 66.33 kg

1320 = 66.33*V^2/17

Solve for V. It will be in m/s

Answer 2

Thanks so much!