System of Particles and Rotational Motion - Result Question 78
84. A small object of uniform density rolls up a curved surface with an initial velocity ’
(a) solid sphere
(b) hollow sphere
(c) disc
(d) ring
[2013]
Show Answer
Answer:
Correct Answer: 84. (c)
Solution:
- (c)
From law of conservation of mechanical energy,
or,
Hence, object is a disc.
