Mass of hanging weight (kg)	Time of 10 revolutions (second)	Circumference (cm)	Tangential velocity of the stopper(2r/t)	The Fg of the hanging weights Fg=mg (Gmamb/r^2)	Calculate the Fc (Fc=mv2/r)	Determine the percent error of each trial by comparing the ideal Fc created by the hanging weights to the experimental Fc
0.15kg	3.80s	3.96m	1.04m/s	??	0.22	??

Mass of stopper: 0.013kg Radius: 0.63 m

I'm working on a circular motion lab. I need some help on finding the Fg and Determine the percent error of each trial by comparing the ideal Fc created by the hanging weights to the experimental Fc