Question

name: q.8. when a pendulum swings, at which point is kinetic energy highest? (a) i (b) ii (c) iii (d) iv

Explanation:

Step1: Recall kinetic - energy formula

The kinetic energy formula is $K = \frac{1}{2}mv^{2}$, where $m$ is mass and $v$ is velocity.

Step2: Analyze pendulum motion

A pendulum has maximum velocity at its lowest - point. As it swings, at the lowest point (point III in the diagram), the height is minimum and the speed is maximum. Since kinetic energy is proportional to the square of the velocity ($K\propto v^{2}$) and the mass $m$ is constant, the kinetic energy is highest at the lowest point of the pendulum's swing.

Answer:

c) III