Physics, 11.02.2020 18:49 dreawongdga
The marble rolls down a track and around the loop the loop of radius R. The marble has mass m and radius r. What minimum height h must the track have for the marble to make it around the loop the loop without falling off?
A sphere has I of 2/5mr^2
From using Newton's second law, I find the critical velocity to be sqrt(gR).
Using energy conservation, I get the equation
mgh = 1/2mv^2 + 1/2IW + 2Rg
Answers: 2
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