MHT CET 2024 Physics question

Choose the correct answer, When a point of suspension of pendulum is moved vertically upward with acceleration 'a', its period of oscillation

(A)decreasesCorrect
(B)increases
(C)remains same
(D)some times increases and some times decreases

Answer: (A)

Solution

When the point of suspension accelerates upward with acceleration , the bob experiences a pseudo force downward in the frame of the suspension, so the effective gravity is . The time period is , which is smaller

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Question ID VK-092722