Questions
Three identical solid spheres moves down three incline planes A, B and C - all of the same dimensions. A is without friction, the friction between B and sphere is sufficient to cause rolling without slipping, the friction between C and sphere causes rolling with slipping. The kinetic energies on A, B and C at the bottom of the inclines are EA, EB and EC
detailed solution
Correct option is B
In the absence of friction; no loss of energy takes place. When static friction acts on the sphere, there is no slipping between the sphere and the surface and no loss of energy occurs. So EA = EB = initial potential Energy. On the plane C, the sphere slips and frictional losses take place.∴ EC < Initial potential energy. Hence, option - (2) is right.Talk to our academic expert!
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A solid cylinder of mass 2 kg and radius 50 cm rolls up an inclined plane of angle inclination 300. The centre of mass of cylinder has speed of 4 ms-1. The distance travelled by the cylinder on the inclined surface will be
(Take, g = 10 ms-2
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