A simple pendulum is oscillating without damiping, When the displacement of the bob is less than maximum, its acceleration vector `veca` is correctly show in:

Options

A.
B.
C.
D.

Answer

C

Explanation

Net acceleration `vec(a)` of the bob in position B has two components
(i) `vec(a)_(n)`= radial acceleration (towards BA)
(ii) `vec(a)_(r)`=tangential acceleration (perpendicular to BA)
Therefore, direction of `vec(a)` is correctly shown in option (3).