Question: A simple pendulum is oscillating without damping. When the displacement of the bob is less than maxi...

Question

A simple pendulum is oscillating without damping. When the displacement of the bob is less than maximum, its acceleration vector $\overrightarrow{a}$ is correctly shown in

Answer 1

Solution

Motion of a simple pendulum is an example of non uniform circular motion. The bob has some tangential as well as radial acceleration.

Thus, total acceleration (1) will be vectorial sum of radial acceleration ( ${\overrightarrow{a}}_{R}$ ) and tangential acceleration $\left( {\overrightarrow{a}}_{T} \right)$ .