MHT CET · Physics · Oscillations
Choose the correct answer.
When a point of suspension of pendulum is moved vertically upward with acceleration ' \(a\) ', its period of oscillation
- A decreases
- B increases
- C remains same
- D some times increases and some times decreases
Answer & Solution
Correct Answer
(A) decreases
Step-by-step Solution
Detailed explanation
For a simple pendulum,
\(\mathrm{T}=2 \pi \sqrt{\frac{l}{\mathrm{~g}}} \Rightarrow \mathrm{~T} \propto \frac{1}{\mathrm{~g}}\)
When the point of suspension is moved vertically upwards with acceleration a, \(g\) becomes \(g+a\). Hence, \(T\) decreases.
\(\mathrm{T}=2 \pi \sqrt{\frac{l}{\mathrm{~g}}} \Rightarrow \mathrm{~T} \propto \frac{1}{\mathrm{~g}}\)
When the point of suspension is moved vertically upwards with acceleration a, \(g\) becomes \(g+a\). Hence, \(T\) decreases.
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