Rotational Motion Question 168
Question: In a bicycle, the radius of rear wheel is twice the radius of front wheel. It $r _{f}$ and $r _{r}$ are the radii and $v _{f}$ and $v _{r}$ are the speeds of topmost points of wheels then
Options:
A) $v _{r}=2v _{f}$
B) $v _{f}=2v _{r}$
C) $v _{f}=v _{r}$
D) $v _{f}=4v _{r}$
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Answer:
Correct Answer: C
Solution:
[c] The velocity of top point of the wheel is twice that of centre of mass.
And the speed of centre of mass is same for both the wheels,
$v=\omega r$
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