- #1
Noobcake
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Homework Statement
A boy sits on top of an igloo shaped like a semi-circle of Radius R. He begins to slide down the semi-circle. At what height above the ground does the boy slide off the semi-circle? Assume g=9.8 m/s2, and no friction.
http://img207.imageshack.us/img207/4010/probmd1.jpg
Homework Equations
Conservation of energy? Or centrifugal force?
The Attempt at a Solution
Couldn't think of any starting points; tried conservation of energy, but failed. Answer is obviously in terms of R. Can anyone shed the light on this problem?
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