- #1
acaulkin
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Homework Statement
A very Slippery ice cube slides in a vertical plane around the inside of a smooth, 20 cm diameter horizontal pipe. The ice cube's speed at the bottom of the circle is 3.0 m/s
Vi = 3.0 m/s
Height at top= 2(.20) = .40
Vf = ?
Homework Equations
KE(initial) + PE(initial) = KE(final) + PE(final)
The Attempt at a Solution
(1/2)mVi^2+0 =(1/2)mVf^2 + mgh
masses cancel out:
(1/2)Vi^2-gh = (1/2)Vf^2
Vi^2-2gh = Vf^2
sqrt(Vi^2-2gh) = Vf
Plugging in all my variables I get an answer of: 1.07 m/s
Answer should be: 2.3 m/s