1. The problem statement, all variables and given/known data The pendulum with a light rigid rod l has a mass m attached to it's end. It is put in a horizontal position and released from rest. At what angle grom the vertical will the tension in the suspension equal to the weight in magnitude? 2. Relevant equations 3. The attempt at a solution the answer should be 71 deg , but I have no idea how to solve it
Welcome to PF! Hi Leonidu! Welcome to PF! Use conservation of energy to find the speed, then use F_{total} = ma … what do you get?