Grade Upto college level Engineering Entrance Exams
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
12 Years agoGrade Upto college level
2 Answers
Saurabh Koranglekar
6 Years ago
Dear student
The answer is option c
Regards
Vikas TU
6 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
Other Related Questions on engineering entrance exams