Guest

A pendulum is oscillating with angular displacement of π/2rad at what angle the vertical as shown the acceleration of bob will be directed horizontally.

A pendulum is oscillating with angular displacement of π/2rad at what angle the vertical as shown the acceleration of bob will be directed horizontally. 

Grade:12th pass

1 Answers

Avishek Bhagat
askIITians Faculty 71 Points
one year ago
Dear Student.
According to the problem

v=2gh=√2glcosθ ,a1=gsinθ
ac=v2/l=2gcosθ
Net acceleration will be horizontal if the vertical components ofac and atcancel each other.
For this ,accosθ=atsinθ
⇒2gcos2θ=gsin2θ⇒anθ=√2




629-1776_pendu.jpg

Think You Can Provide A Better Answer ?