1tapas I m also aware of this expression,
but buddy i want to know wats the physical meaning of "rest mass"
term?
how z it different frm general " mass " term ???
can anyone please tell me basically what is meant by the term
"rest mass of a body " and how it differs from the " mass(general term
used in physics) of the body" ??
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3 Answers
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1The invariant mass, intrinsic mass, proper mass or just mass is a characteristic of the total energy and momentum of an object or a system of objects that is the same in all frames of reference. When the system as a whole is at rest, the invariant mass is equal to the total energy of the system divided by c2, which is equal to the mass of the system as measured on a scale. If the system is one particle, the invariant mass may also be called the rest mass.
The term relativistic mass is the sum total quantity of energy in a body or system (divided by c2). As seen from the center of momentum frame, the relativistic mass is also the invariant mass.