Question

point mass meaning with example​

Answer 1

$\huge \bold \blue {ANsWeR ✔︎}$

A point mass is an abstract point in space where the entire mass of the object has been concentrated as it seems .

For example a basketball .

If you have to track a basketball then it has infinite number of points just on its surface and tracking each point through its trajectory will require infinite computational power which as you may very well understand is impossible.

So what to do . We instead of tracking the entire ball we consider as a point object . A singular point in space time when the entire mass of the ball is concentrated. So now instead of dealing with n number of particles you just deal with one particle and its trajectory . That's makes feel simpler.

Hence the assumption.

Hope It Helps ✔︎