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Eats Dirt
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Homework Statement
A car in an amusement park ride rolls without friction around the track it starts from rest at a point A from height H above the bottom of the loop. treat the car as a particle. what is the minimum value of height (in terms of R radius)such that the car doesn't fall off the very top of the ramp.
Homework Equations
E=mgh
gravity constant
Fc=.5mv^2
K=.5mv^2
The Attempt at a Solution
i don't really know where to start but ill give it a shot.
2R is the height of the
so mgh-mg2R= 1/2mv^2
i don't really know what else to do -_-
since mgh-mg2R=1/2mv^2 could you assume that v approaches 0 then mgh=mg2R which makes sense to me because if the surface is frictionless then energy is being conserved so does this mean if the height from which it came = the height of what it needed to go to?