OpenStudy (anonymous):
Two solid balls (one larger, the other small) and a cylinder roll down a hill. Which has the greatest speed at the bottom and which the least? a. the larger ball has the greatest, the small ball has the least. b. the small ball has the greatest, the larger ball has the least. c. the cylinder has the greatest, the small ball has the least. d. both balls have the same greater speed, the cylinder has the least.
OpenStudy (anonymous):
as irrespective of the radius, the rotational kinetic energy of the balls will be same and will be greater than that of the cylinder, option d is correct !!!
OpenStudy (anonymous):
Assuming we neglect any resistance due to air... you might consider the surface areas in contact with the inclined plane. Would the larger contact area of the cylinder cause more resistance?
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