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

I am trying to calculate the speed and force needed to make a marble complete a loop in the rollercoaster that i have been instructed to make. I do not know how to calculate f though. I can not use v=d/t becuase I cant find time until the rollercoaster is built which I cannot build until I find the force needed to get the marble to go through the loop. How do i find f?

Radius (arbitrary) = 11 cm

= 0.11 m

mass = approx 3.56g

2. Relevant equations

T = 1/f

v = 2πr/T

FR =mv^2 / r

3. The attempt at a solution

v = 2πr/T

= 2πr/(1/f)

= 2π0.11/(1/f)

=0.6911503838/(1/f)

FR = mv^2/r

= 3.56v^2 / 0.11

= 32.36363636v^2

= 32.36363636(0.6911503838/(1/f))

π is supposed to be pi, the alt code I found did not work sorry

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# Homework Help: Loop in a Rollercoaster

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