Answer
The difference of mass is $\large 6.03\times10^{-29}$ kg.
From sample problem 44.01:
Mass of muon = $105.7\hspace{3mm}MeV/c^2$
Mass of pion = $139.6\hspace{3mm}MeV/c^2$
$1\hspace{2mm}MeV=1.6\times 10^{-13}\hspace{2mm}J$
$c=3\times10^8\hspace{3mm}m/s$
Work Step by Step
The difference is:
