A

force

F$($x$)=(3\mathrm{.}0/$x$)$ N acts on a particle as it moves along the positive x$-$axis. $($a$)$ How much

work

does the

force

do on the particle as it moves from x $=2\mathrm{.}0$ m to x $=5\mathrm{.}0$ m$?($b$)$ Picking a convenient reference point of the

potential energy

to be zero at x $=$ $,$ find the

potential energy

for this

force

$.$