If force F, length L and time T be considered fundamental units of mass will be

Let [M]∝[FaLbTc]So, using dimensions, we have[M1L0T0]=K[MLT−2]a[L]b[T]c=K[MaLa+bT−2a+b]We have, a =1, a = b = 0 and k =1 ∴          b=−1and −2a+c=0⇒c=2So unit of mass is [FL−1T2]