what is the difference between Frictional and gravitational force
frictional force ????? ??? ?? ????? ?? ?? ???? ??
gravitational force - ??? ?? ??? ?? ??? ????? ?? ?? ?? ??? ???? ??? ?? gravitational force ?? ??? ??
?? ?? Gravitational force ?? Frictional force ?? ??? ?? Difference
gravitational force - ??? ?? ??? ?? ??? ????? ?? ?? ?? ??? ???? ??? ?? gravitational force ?? ??? ??
?? ?? Gravitational force ?? Frictional force ?? ??? ?? Difference