MHT CET · Physics · Motion In Two Dimensions
A particle is moving along a circular path with constant speed and centripetal acceleration \(a\). If the speed is doubled, the ratio of its acceleration after and before the change is
- A 2:1
- B 4:1
- C 3:1
- D 1:4
Answer & Solution
Correct Answer
(B) 4:1
Step-by-step Solution
Detailed explanation
\(\begin{aligned}
& \text { Centripetal acceleration }=\frac{v^2}{R} \\
& \therefore a \propto v^2
\end{aligned}\)
If the speed is doubled, then the ratio of its acceleration after and before are in \(4: 1\) ratio.
& \text { Centripetal acceleration }=\frac{v^2}{R} \\
& \therefore a \propto v^2
\end{aligned}\)
If the speed is doubled, then the ratio of its acceleration after and before are in \(4: 1\) ratio.
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