Questions
A body initially at rest and sliding along a frictionless track from a height h (as shown in the figure) just completes a vertical circle of diameter AB=D. The height h is equal to
detailed solution
Correct option is D
As body is at rest initially, i.e., speed=0At point A, speed=v As track is frictionless, so total mechanical energy will remain constant.∴ (T.M.E)i=(T.M.E)f0+mgh=12mv2+0 or h=v22g For completing the vertical circle, v≥5gR∴ h=5gR2g=52R=54DTalk to our academic expert!
Similar Questions
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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