Physics

Problem

For a particle of mass

m

moving under a central conservative field, the potential energy is given by

V(r)=\frac{A}{r}-\frac{B}{r^{2}}, \qquad A>0,\; B>0,

where

r

is the radial distance from the fixed centre. a. (i) Derive the radial force

F(r)

acting on the particle."},{