Can angular momentum be conserved about any point?

Assuming that there are no external forces/torques acting then angular momentum is conserved about any point.

What does the law of conservation of angular momentum predict it will do?

Conservation of angular momentum of rotating bodies is analogous to the conservation of linear momentum. Angular momentum is a vector quantity whose conservation expresses the law that a body or system that is rotating continues to rotate at the same rate unless a twisting force, called a torque, is applied to it.

Is angular momentum of Earth conserved?

The energy and angular momentum of Earth are conserved, because the gravitational force is both conservative and central.

How is angular momentum conserved?

Making Connections: Conservation Laws Angular momentum is conserved when net external torque is zero, just as linear momentum is conserved when the net external force is zero.

Is angular momentum completely analogous to linear momentum What if any are their differences?

Angular momentum is completely analogous to linear momentum, first presented in Uniform Circular Motion and Gravitation. It has the same implications in terms of carrying rotation forward, and it is conserved when the net external torque is zero.

How do you prove the conservation of angular momentum?

The external torque on a body is zero, if the angular momentum of the body is conserved. The linear momentum and angular momentum of the body is given by →p=m→v and →l=→r×→p about an axis through the origin. The angular momentum →l may change with time due to a torque on the particle.

How is linear momentum not conserved?

Momentum is not conserved if there is friction, gravity, or net force (net force just means the total amount of force). What it means is that if you act on an object, its momentum will change. This should be obvious, since you are adding to or taking away from the object’s velocity and therefore changing its momentum.

What is the law of Conservation of angular momentum?

The Law of Conservation of Angular Momentum states that the initial and final angular momentum are equal and that if no net torque acts on an object then there is no change in angular momentum. If net torque is zero then angular momentum is constant or conserved. Below is the equation for the Moment of Inertia for the disk.

Is angular momentum a vector?

Four fast facts about angular momentum L= Iω Angular momentum is a vector, pointing in the direction of the angular velocity. If there is no net torque acting on a system, the system’s angular momentum is conserved.

How do you find the angular momentum with net torque?

L = Iω. Angular momentum is a vector, pointing in the direction of the angular velocity. If there is no net torque acting on a system, the system’s angular momentum is conserved. A net torque produces a change in angular momentum that is equal to the torque multiplied by the time interval during which the torque was applied.

How can we apply angular momentum conservation to Sarah?

We can apply angular momentum conservation here. Sarah’s angular momentum before the collision equals the angular momentum of the system after the collision. It’s not obvious that Sarah has an initial angular momentum, although she clearly has a linear momentum.