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oddjobmj
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Homework Statement
A mass slides down a segment of a circle starting from rest at A. It has a radius of R. Find the speed of the mass at the bottom ignoring friction. Also, find the time for the ice cube to go from A to B.
As far as solving for the time I am told not to calculate the integral but plot the function and estimate the area below the curve.
I attached an image of the diagram I am provided.
Homework Equations
U=mgr
K=.5mv2
T=[itex]\frac{2πr}{v}[/itex]
The Attempt at a Solution
I believe the first part is simple. I can use the conservation of energy to find v because I know that at A there is no kinetic energy, it is all potential. The opposite is true at B.
.5mv2=mgr
.5v2=gr
vf=[itex]\sqrt{2gr}[/itex]
What I am having trouble doing, because it has been a while since the section on circular motion , is relating v and t. v in the form I have expressed it (vf) is a constant so it doesn't really help me find t.
Any suggestions on a next step? Thanks!