- #1
Naeem
- 194
- 0
Loop-the-Loop
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A small spherical ball of radius r = 1.9 cm rolls without slipping down a ramp and around a loop-the-loop of radius R = 2.6 m. The ball has mass M = 375 g.
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a) How high above the top of the loop must it be released in order that the ball just makes it around the loop?
h = m
5/2*2.6 NO
HELP: Use conservation of energy. Remember that the ball has both translational and rotational kinetic energy. Since it rolls without slipping, the two are related.
HELP: What does it mean to just make it? If you have forgotten, go back and review similar loop-the-loop problems you did without the added complication of rotation. See Lecture 12 for example.
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b) Repeat problem (a) for a disk. Find the ratio of the heights h for the two cases.
hdisk/hsphere =
Can somebody help here!
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A small spherical ball of radius r = 1.9 cm rolls without slipping down a ramp and around a loop-the-loop of radius R = 2.6 m. The ball has mass M = 375 g.
--------------------------------------------------------------------------------
a) How high above the top of the loop must it be released in order that the ball just makes it around the loop?
h = m
5/2*2.6 NO
HELP: Use conservation of energy. Remember that the ball has both translational and rotational kinetic energy. Since it rolls without slipping, the two are related.
HELP: What does it mean to just make it? If you have forgotten, go back and review similar loop-the-loop problems you did without the added complication of rotation. See Lecture 12 for example.
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b) Repeat problem (a) for a disk. Find the ratio of the heights h for the two cases.
hdisk/hsphere =
Can somebody help here!