Question

Compare magnitude electrical and gravitational forces exested on an object mass=10g , charge=20sec by an identical object that is placed 10cm from the first object?

Answer 1

Answer:

$\frac{F1}{F2}$=5.4*$10^{26}$

Explanation:

Let

F1=Electric force

F2=Gravitational Force

F1=$\frac{kq^{2} }{r^{2} }$

F2=$\frac{Gm^{2} }{r^{2} }$

$\frac{F1}{F2}$ = $\frac{\frac{kq^{2} }{r^{2} } }{\frac{Gm^{2} }{r^{2} } }$

$\frac{F1}{F2}$ = $\frac{kq^{2} }{Gm^{2} }$

$\frac{F1}{F2}$ =$\frac{9*10^{9}*(20)^{2} }{6.67*10^{-11} *(0.01)^{2} }$

$\frac{F1}{F2}$ = 5.4*$10^{26}$