Question
In a simple pendulum of length I the bob is pulled aside from its equilibrium position through an angle and then released. The bob passes through the equilibrium position with speed
BITSAT
Physics
Oscillations
2021
BITSAT 2021
BITSAT Physics Question (2021) — Solution
Options
- A. 2 g l(1+ )
- B. 2 g l
- C. 2 ~g l
- D. 2 ~g l(1- )
Answer
D. 2 ~g l(1- )
Step-by-step solution
If l is length of pendulum and be angular amplitude then from principle of conservation of energy (Initial total energy) 0+ mgh = 1 2 m v^ 2 +0 (Final total energy) v= 2 g h = 2 g l(1- )
Related: Physics — Oscillations · All PYQ Banks