Question

http://i.prntscr.com/nd4-uD-ETfibTV-7MtH8mg.png

Answer 1

$F=ILB =25.0*1.50*5.00*10^{-3} T=187.500N$

$F=ma=m=\frac{f}a=\frac{187.500}{9.8}=19.1327g$

$1g=\frac{1}{1000}kg$

$19.1327g=\frac{1}{1000}*19.1327$

$=1.91*10^{-2}kg$