engineering recuitment BEL Probationary Engineers Mock Test 2025 Mechanical Vibrations Undamped Free Vibration Vibration of Beam and Pendulum
Equation of motion for simple pendulum for large oscillations will be
1
\(\ddot\theta + \frac{g}{l}\sin \theta = 0\)
2
\(\ddot\theta + \frac{mg}{l}\sin \theta = 0\)
3
\(\ddot\theta + \frac{mg}{l} \theta = 0\)
4
\(\ddot\theta + \frac{g}{l} \theta = 0\)