Oscillations · JEE Preparation Physics
A simple pendulum of length L and mass m is suspended in a lift that is accelerating upward with an acceleration a. The time period of small oscillat…
Practice question from Oscillations (JEE Preparation Physics), with the correct answer and a step-by-step solution.
medium · MCQ · Q-0DFE33
A simple pendulum of length and mass is suspended in a lift that is accelerating upward with an acceleration . The time period of small oscillations of this pendulum is:
- A.2\pi \sqrt{\frac{L}{g - a}}
- B.2\pi \sqrt{\frac{L}{g + a}}Correct answer
- C.2\pi \sqrt{\frac{L}{g}}
- D.2\pi \sqrt{\frac{L}{\sqrt{g^2 + a^2}}}
Solution
When a lift accelerates upward with acceleration , the effective acceleration due to gravity is . The time period is given by .
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