IS THERE ANY CHANGE IN MASS OF AN OBJECT DUE TO CHANGE IN VELOCITY OR SPEED

Asked by AYUSH | 16th Jul, 2013, 03:32: PM

Expert Answer:

Mass is generally defined in two different ways, both of which are traditional concepts in the realm of physics. The first definition, also called "invariant mass" or "rest mass," suggests that mass is an invariant quantity that is the same for every observer. This definition holds true when the body is at rest. Once the body begins to move, the measurement of mass changes.

The second definition, or what is called "relativistic mass," suggests that the velocity of the observer has an effect on the way mass is measured. In other words, relativistic mass is mass assigned to a body in motion. Relativistic mass is expressed as mr and invariant mass is expressed as mo. Relativistic mass increases with velocity and reaches infinity when the velocity approaches the speed of light, or c. Below is the relation between the two masses:


Answered by  | 16th Jul, 2013, 05:00: PM

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