Question

In the given figure, velocity of the bob in the simple pendulum at the point of maximum deflection is:

• A. zero
• B. unity
• C. maximum
• D. infinite

Answer 1

Answer: (A)

zero

When the pendulum moves, the key aspect we must remember is the conservation of energy.
Kinetic energy + Potential energy = constant
$\frac{1}{2}m{v}^2+mgh=$ constant
Hence when the object is at its lowest height, it will have maximum kinetic energy/velocity, which occurs at mean position (0 amplitude) and at the point of maximum deflection velocity is zero .
Hence option A is correct.