Angular Momentum - Practice Questions & MCQ

• The moment of linear momentum of a body with respect to any axis of rotation is known as angular momentum. If  P is the linear momentum of a particle and its position vector from the point of rotation is r then angular momentum is given by the vector product of  linear momentum and position vector. 

        ,  where is the angle between r and p.

• Its direction is always perpendicular to the plane containing vector  r and P and with the help of right hand screw rule we can find it.

 Its direction will be  perpendicular to the plane of rotation and along the axis of rotation

• SI Unit- Joule-sec or  

• Dimension-

•  In case of circular motion

As and and

So in vector form

• The net  angular momentum of a system consists of n particles is equal to the vector sum of angular momentum of each particle.