concept of reduced massmotion under a central forcebr In physics, the reduced mass is the "effective" inertial mass appearing in the two-body problem of Newtonian mechanics. It is a quantity which allows the two-body problem to be solved as if it were a one-body problem. Note, however, that the mass determining the gravitational force is not reduced. In the computation, one mass can be replaced with the reduced mass, if this is compensated by replacing the other mass with the sum of both masses. The reduced mass is frequently denoted by {\displaystyle \mu }\mu (mu), although the standard gravitational parameter is also denoted by {\displaystyle \mu }\mu (as are a number of other physical quantities). It has the dimensions of mass, and SI unit kg.br A conservative force is a force with the property that the total work done in moving a particle between two points is independent of the path taken.[1] Equivalently, if a particle travels in a closed loop, the total work done (the sum of the force acting along the path multiplied by the displacement) by a conservative force is zero.[2]br br A conservative force depends only on the position of the object. If a force is conservative, it is possible to assign a numerical value for the potential at any point and conversely, when an object moves from one location to another, the force changes the potential energy of the object by an amount that does not depend on the path taken, contributing to the mechanical energy and the overall conservation of energy. If the force is not conservative, then defining a scalar potential is not possible, because taking different paths would lead to conflicting potential differences between the start and end points.br br Gravitational force is an example of a conservative force, while frictional force is an example of a non-conservative force.br ★★★★★★★★★★★★★★★★br follow us on br facebook:- Circus of physicsbr Classical mechanicsbr Classical mechanics Lecturesbr Classical mechanics notesbr Classical Dynamics of Particles and Systemsbr Physics lectures of classical mechanicsbr Classical mechanics for BSbr Classical mechanics for M.Scbr Newtonian mechanics for single particlebr Classical mechanics lectures in Hindibr Classical mechanics lectures in Urdubr Newtonian mechanicsbr Lagrangian Mechanicsbr Hamiltonian Mechanicsbr ADS Physicsbr B.Sc 1 year PHYSICS notesbr B.Sc 1 year Mechanicsbr B.sc 1 year Vectorsbr B.Sc 2 year PHYSICS notesbr B.Sc 3 year PHYSICS notesbr B.