  In this paper, we search the existence of Bianchi-V string cosmological model
in $f(R,T)$ gravity with power law expansion. Einstein's field equations have
been solved by taking into account the law of variation of Hubble's parameter
that yields the constant value of deceleration parameter (DP). We observe that
the massive strings dominate the early universe but they do not survive for
long time and finally disappear from the universe. We examine the nature of
classical potential and also discuss the physical properties of universe.
