NDA 2026 Physics question
A pendulum of length oscillates with an angular amplitude of and time period . Let be the time period for small angle of oscillations, where is the acceleration due to gravity. If air resistance is negligibly small and the string remains straight, then which one of the following is correct?
Answer: (A)
Solution
The formula holds only for small amplitudes, where . For a large amplitude the restoring force is smaller than
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