6?23.5?1.5=2N/cm=200N/m;(2) From the graphical representation: mg=kx1,m=kx1 g=2×0.510=0.1kg,Applying t" />

(2015?Xinyang a model) an experimental group to do "investigate the relationship between spring force and spring elongation" experiment, using the device shown in Figure a, the mass of the uncounted

(1) the coefficient of strength of the spring: k=<
△F
△F
△F
=
6 solid black">6?2
3.5?1.5
=2N/cm=200N/m;

(2) From the graphical representation: mg=kx1,

m=

kx1
g
=
2×0.5
10
=0.1kg,

Applying the graphical method to the experimental data, the mass of the small disk will result in the same measurements of the spring's coefficient of strength compared to the true value;

Therefore, the answer is: (1) 200; (2) 0.1, same The