# Doubt from centre of mass

**Sandeep_2020**#1

**Shreyas_2021**#3

Sorry for some reason the photo is not getting uploaded.

The vertical displacement here is L(1-cos@).

Using WET, v at lowest point is √2gL(1-cos@)

Therefore centripetal acceleration at lowest point is v^2/L, which also happens to be the net acceleration a of the ball.

So, T - mg = ma, solving it you shall get the value of T