railway RRB Technician Grade 1 Mock Test 2024 Physics Work Power and Energy Conservation of Mechanical Energy
A simple pendulum is at rest. After sometime v velocity is given to the bob of the pendulum. So the potential energy at the highest point will be? (m is mass of bob, h is maximum height)
1
2mgh
2
\( {1 \over 2}mv^2\)
3
\( {1 \over 2}mv^2\) + mgh
4
\( {1 \over 2}mv^2\) - mgh