Angular Momentum and Torque

Angular Momentum, Torque

If X=( Angular Momentum)^2/(Torque)* (Mass) then dimensional formula of X will be

Assertion : The moment of Linear Momentum is called Angular momentum (L) i.e. L = r xx p = (mv) xx r = mvr if V = r omega then. L = mr^(2) omega (or) L = I omega Reason : For conservation of Angular momentum, Torque (Rotational force applied externally) must be zero.

If L is the angular momentum and tau is the torque then prove that ( tau = dL/dt)

Torque and Angular Momentum

Starting from the equation connecting angular momentum and linear momentum, deduce the relation between torque and angular momentum

A : If angular momentum of an object is constant about a point then net torque on it about that point is zero. R : Torque is equal to the rate of change of angular momentum.

A : If angular momentum of an object is constant about a point then net torque on it about that point is zero. R : Torque is equal to the rate of change of angular momentum.

Angular Momentum Conservation - 4|| Torque and Angular Momentum about Point

Assertion: For the plantes orbiting around the sun, angular speed, linear speed, K.E. changes with time, but angular momentum remains constant. Reason: No torque is acting on the rotating planet. So its angular momentum is constant.