# What do you mean by center of mass frame?

What do you mean by center of mass frame? A special case of the center-of-momentum frame is the center-of-mass frame: an inertial frame in which the center of mass (which is a physical point) remains

## What do you mean by center of mass frame?

A special case of the center-of-momentum frame is the center-of-mass frame: an inertial frame in which the center of mass (which is a physical point) remains at the origin. In all COM frames, the center of mass is at rest, but it is not necessarily at the origin of the coordinate system.

Is momentum always conserved in centre of mass frame?

In short, in the absence of external forces acting on the system as a whole, mdv/dt = 0, which means that the momentum of the centre of mass of the system is always conserved.

What is the center of mass momentum?

center of mass: The balancing point of a system, or the point at which all of the mass in a system is concentrated. Conservation of Momentum: The change in the total momentum of a system is zero.

### Can centre of mass be outside the body?

The center of mass may be located outside the physical body, as is sometimes the case for hollow or open-shaped objects, such as a horseshoe.

What unit is momentum measured in?

kg•m/s
The units for momentum would be mass units times velocity units. The standard metric unit of momentum is the kg•m/s.

When does relativistic momentum hold in all inertial frames?

Relativistic momentum is defined in such a way that the conservation of momentum will hold in all inertial frames. Whenever the net external force on a system is zero, relativistic momentum is conserved, just as is the case for classical momentum.

## Which is the center of momentum of a system?

In physics, the center-of-momentum frame (also zero-momentum frame or COM frame) of a system is the unique (up to velocity but not origin) inertial frame in which the total momentum of the system vanishes.

How does the conservation of momentum apply in special relativity?

Conservation of momentum, which still applies in Special Relativity, implies that each component of momentum is conserved. Note that u is the velocity of the object in a reference frame, not the velocity of a reference frame relative to another. In this definition of momentum, the mass m=m0 is the “rest mass”.

Can a momentum be conserved in another frame of reference?

It can be shown that the momentum calculated as merely even if it is conserved in one frame of reference, may not be conserved in another after applying the Lorentz transformation to the velocities.