A bob attached to the string oscillates back and forth resolve the forces acting on the bob in to compents what is the acceleration experience by the bob at an angle `theta`

Explanation

(i) Here tangential force (Ref . Diagram )
F = mg sin `theta`
ma = mg` sin theta`
`:. , a = g sin theta`
(ii) Centripetal force
`F= T- mg sin theta`
`ma = T - mg sin theta`
`:. , a = (T - mg sin theta )/( m )`