The system is in equilibrium with zero net force. Since apply force 570N & counterforce 570N.
Why the displacement value is different & the direction also different?
Restraint at leaf spring
Counter force 570N
Displacement 0.0134mm downward.
and compare below with same constraint but only change the "area" of apply force
Apply force 570N still the same.
displacement 0.052mm upward.