k_Coulomb = -0.06
[-0.11,-0.01]
k_Hooke = 0.03
[0.00,0.10]
d_Hooke = 100
[0,100]
mu = -0.50
[-1.00,0.00]
v_threshold = 0.01
[0.00,0.10]
delta_t = 0.20
[0.01,1.00]
restart