Physics
Sandbox 3D
A 3D physics workshop: bowling, a suspended bridge, materials, collisions and destruction.

What happens
A 3D physics workshop: bowling, a suspended bridge, materials, collisions and destruction.
Launch speed and lateral offset change the bowling shot. The bridge deck uses rigid planks, hinge pairs and suspension constraints attached to a fixed cable profile. It demonstrates coupled motion under load, not an engineering cable-stress calculation. Energy in the body inspector is translational kinetic energy.
Choose a tool, then click the scene. G: grab; Delete: remove; H: frame. Right-drag: orbit; wheel: zoom. Release a moving grab to throw.
Equations used in the module
Equations J_n ≥ 0; |J_t| ≤ μJ_n v_n′ = −e v_n Δv = J/m; Δω = I⁻¹(r × J) bias = β max(0, δ−δ₀)/h


