A small rock with mass 0.30 kg k g is released from rest at point A...

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Physics

A small rock with mass 0.30 kg k g is released from rest atpoint A A , which is at the top edge of a large, hemispherical bowlwith radius R R = 0.48 m m (the figure (Figure 1)). Assume that thesize of the rock is small compared to R R , so that the rock can betreated as a particle, and assume that the rock slides rather thanrolls. The work done by friction on the rock when it moves frompoint A A to point B B at the bottom of the bowl has magnitude 0.22J J .
a. Between points AA and BB, how much work is done on the rockby the normal force?
c. What is the speed of the rock as it reaches point BB?
d.Of the three forces acting on the rock as it slides down thebowl, which (if any) are constant and which are not? Explain.
e. just as the rock reaches point BB, what is the normal forceon it due to the bottom of the bowl?

Answer & Explanation Solved by verified expert

3.8 Ratings (607 Votes)

Part A As the normal force is perpendicular to the displacementvector so the work done on the rock between points A and B by thenormal force is zeroPart B See Answer

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