the difference between point extended object. If yes, then a point object is an object which has negligible dimensions and an extended object is an object that has dimensions and center of mass of the extended object is at a particular location within the object.

a point particle is described by its position in space… a rigid extended object is described by the position of its center of mass and its orientation.

Point mass (pointlike mass) is the concept, for example in classical physics, of a physical object (typically matter) that has nonzero mass, and yet explicitly and specifically is (or is being thought of or modeled as) infinitesimal (infinitely small) in its volume or linear dimensions.

The mass of an object, which is concentrated at a point is called ”point mass”. It has no internal structures like shape and size . Examples : (i) In the event of motion of Earth around the Sun , Earth can be treated as point mass . (ii) When stone is thrown in space, stone is considered as point mass .

If the size of an object is very small compared to its covered distance, then it can be treated as a point object. Examples: (1) Earth can be treated as a point object for studying its motion around sun. (2) A plane under a journey of several thousand kilometres can be treated as a point object.

Examples: (i) A car covering a distance of 10 km can be treated as a point object. (ii) Earth can be regarded as a point object for studying its motion around the Sun. A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of 3.0 m s–2 for 8.0 s.

In physics, we call these things “point particles” because they exist only at a single point. Anything that doesn’t act like a point particle is called an “extended object.” I will spend the rest of this post explaining why and how Newton’s Laws can apply to extended objects.

A point object is an expression used in kinematics. It is an object whose dimensions are neglected or ignored compared to its motion. A point object indicates a tiny object counted as a dot object to simplify the calculations.

A point mass is an idealization of a real solid body. It possesses mass, but its demensions are assumed to be so small that its location can be sufficiently accurately defined by the position of a point.

materijalna točka. Point-like object is an expression, usual in kinematics: a point-like object (or a particle) is an object with dimensions, which can be neglected while considering its motion.

a point particle is described by its position in space… a rigid extended object is described by the position of its center of mass and its orientation. Think “degrees of freedom”.

The only definition that I have is that an extended object has a definite, finite size and shape. That doesn’t tell me very much… a point particle is described by its position in space… a rigid extended object is described by the position of its center of mass and its orientation. Think “degrees of freedom”.

A ballistic trajectory of a rotating object – the center of mass of an extended object that is rotating will follow the same trajectory that a point mass would follow after it is launched.

The center of mass of the extended object of mass M moves like a point particle of mass M will move under the influence of the same net external force. In this way, the point particle approximation used in translational kinematics and dynamics is now justified. [ show] Example 1: The athlete – a non rigid object .