tolong bantu guysss sama caranya ya guysss

9. xo = 15 cm
x = 17.5 cm
Δx = x - xo = 17.5 - 15 = 2.5 cm = 0.025 m
m = 150 gram = 0.15 kg
g = 10 m/s²

F = w = k Δx
m g = k Δx
0.15 x 10 = k (0.025)
k = (0.15 x 10)/0.025
k = 60 N/m

10. A. k = 20/0.07 = 285.7 N/m
B. k = 15/0.04 = 375 N/m
C. k = 5/0.002 = 2500 N/m
D. k = 10/0.03 = 333.33 N/m
E. k = 10/0.0002 = 50000 N/m
maka yg memiliki elastisitas terkecil adalah grafik A.