Laws of Motion - Result Question 56
56. What is the minimum velocity with which a body of mass $m$ must enter a vertical loop of radius $R$ so that it can complete the loop?
(a) $\sqrt{gR}$
(b) $\sqrt{2 gR}$
(c) $\sqrt{3 gR}$
(d) $\sqrt{5 gR}$
[2016]
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Answer:
Correct Answer: 56. (d)
Solution:
- (d) $\sqrt{5 gR}$ is the minimum velocity which the body must possess at the bottom of the circle so as to go round the circle completely.
