A solid sphere is rolling without slipping on a horizontal surface. The ratio of its rotational kinetic energy to its translational kinetic energy is
a)
2/9
b)
2/7
c)
2/5
d)
7/2
A solid sphere is rolling without slipping on a horizontal surface. The ratio of its rotational kinetic energy to its translational kinetic energy is
a)
2/9
b)
2/7
c)
2/5
d)
7/2
Question ID - 53933 | SaraNextGen Top Answer
A solid sphere is rolling without slipping on a horizontal surface. The ratio of its rotational kinetic energy to its translational kinetic energy is
a)
2/9
b)
2/7
c)
2/5
d)
7/2
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A solid sphere is rolling without slipping on a horizontal surface. The ratio of its rotational kinetic energy to its translational kinetic energy is |
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|
a) |
2/9 |
b) |
2/7 |
c) |
2/5 |
d) |
7/2 |
1 Answer
127 votes
Answer Key / Explanation : (c) -
|
(c) The kinetic energy of the solid sphere,
The rotational kinetic energy,
But then,
On dividing Eq. (ii) by Eq. (i), we have
or |
…(i)
for solid sphere and 
…(ii)
127 votes
Answer Link
127