Homework Help: Physics

Posted by Eve on Tuesday, February 12, 2013 at 11:08pm.

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

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

Physics - drwls, Wednesday, February 13, 2013 at 2:11am
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
Physics - Eve, Wednesday, February 13, 2013 at 2:26am
Thanks so much!

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