A pendulum has time period T for small oscillations. An obstacle P is situated below the point of
Channel: Doubtnut
Date: 2020-08-30

A pendulum has time period T for small oscillations. An obstacle P is situated below the point of suspension O at a distance `(3l)/4`. The pendulum is released from rest. Throughout the motion, the moving string makes small angle with vertical. Time after which the pendulum returns back to its initial position is img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/MPP_PHY_C11_E01_031_Q01.png" width="80%"