Particle or Point Mass or Point object
Category : JEE Main & Advanced
The smallest part of matter with zero dimension which can be described by its mass and position is defined as a particle or point mass.
If the size of a body is negligible in comparison to its range of motion then that body is known as a particle.
A body (Group of particles) can be treated as a particle, depends upon types of motion. For example in a planetary motion around the sun the different planets can be presumed to be the particles.
In above consideration when we treat body as particle, all parts of the body undergo same displacement and have same velocity and acceleration.
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