- #1
bdh2991
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Homework Statement
A ball rolls without slipping down incline A, starting from
rest. At the same time, a box starts from rest and slides down incline B, which
is identical to incline A except that it is frictionless. Which arrives at the bottom
first? (a) The ball arrives first. (b) The box arrives first. (c) Both arrive at
the same time. (d) It is impossible to determine.
Homework Equations
KE = 1/2 I ω2
KE = 1/2 m v2
The Attempt at a Solution
I answered D because i felt that you would need to know how much work had been done by friction. The correct answer is B however, and I'm not certain why. Does the ball rolling down the incline have both rotational and translational energy?