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A body is allowed to slide on a frictional less track from rest under-gravity. The track ends in a circular loop of diameter D. What should be the minimum height of the body in terms of D, so that it may successfully complete the loop?(a) D(b)4/5 D(c)5/4 D(d) 2D

sumit kumar , 11 Years ago
Grade Upto college level
anser 2 Answers
Saurabh Koranglekar

Last Activity: 4 Years ago

Dear student

The answer is option c

Regards

Vikas TU

Last Activity: 4 Years ago

Velocity at bottom of loop to do complete circular motion is √5gr , where r is radius.
By applying conservation of energy :
mgh=(1/2)*m(5gd/2)
h=5d/4

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