Highly selective Backlog Qs for JEE MainPhysicsRotational Motion
A particle of mass ' m ' is projected with a velocity v making an angle of 30^ with the horizontal. The magnitude of angular momentum of the projectile about the point of projection when the particle is at its maximum height ' h ' is
Options
- A3 2 m v² g
- Bzero
- Cm v³ 2 g
- D3 16 m v³ g
Correct answer
D. 3 16 m v³ g
Step-by-step solution
Angular momentum L₀=p r_ ( . linear momentum p=m v and . r ₁=H ) L₀=m v H =m v 3 2 v² ² 30^ 2 g = 3 m v³ 16 g