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The examples from Ordinate 2D, and scenes, parts, materials and scripts made by its users. All free: open one in the studio with one click.

From Ordinate 2D ✓

Material Concrete Material · Ordinate 2D ✓ μs 1.0, μk 0.8 for rubber on concrete; 0.6/0.5 concrete on concrete; density 2400 kg/m³ (rubber on concrete: Serway & Jewett, Table 5.1; the rest typical values); restitution 0.2, typical. It keeps a body's own mass. Material Glass Material · Ordinate 2D ✓ μs 0.94, μk 0.40 glass on glass (Serway & Jewett, Table 5.1); restitution 0.7, typical. It keeps a body's own mass. Material Aluminium Material · Ordinate 2D ✓ μs 0.61, μk 0.47 against steel (Serway & Jewett, Table 5.1); restitution 0.5, typical. It keeps a body's own mass. Script Measure friction by tilting Script · Ordinate 2D ✓ Tilt a platform slowly: the block slips when tan θ = μ. Slipping, then Rolling Scene · Ordinate 2D ✓ A disc and a hoop are thrown along the floor without spinning: both slide at first, friction slows the centre and spins the body up until v = ωR, then both roll steadily at v₀/(1 + k): ⅔ v₀ for the disc, a little over half for the hoop. Dominoes Scene · Ordinate 2D ✓ Fourteen dominoes and a rolling ball. A chain of falls: try moving one to change the spacing. Block on a Slope Tied over a Pulley Scene · Ordinate 2D ✓ 2 kg on a 30° slope tied over a pulley to 3 kg: a = (m₂ − m₁ sin θ − μ m₁ cos θ) g / (m₁ + m₂), and T = m₂(g − a). Ladder against a Wall Scene · Ordinate 2D ✓ A ladder on a smooth wall stands only if the floor friction is at least ½cot θ (0.29 at 60°). Set the floor friction to 0.2 and it slips.

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