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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 ✓

Bridge the gap Challenge · Ordinate 2D ✓ The ball rolls off the ramp towards a gap 1 m wide. Get it across to the green zone, with at most two parts. Script Moment of inertia from rolling times Script · Ordinate 2D ✓ A disc, a thick ring, a thin hoop and a sliding block race down equal slopes; k = g sin θ t²/2L − 1 gives each one's I/mr². The Yo-Yo Scene · Ordinate 2D ✓ A disc falls as its string unwinds: a = g/(1 + I/mR²) = ⅔ g, and the string holds a third of its weight, until the string runs out. A box beside it falls at g. Ordinate 2D: the logo as a machine Scene · Ordinate 2D ✓ The name spelled with machine parts: the O is a ring wheel on a motor, the d a pinion lifting a rack, the dot of the i bobs on a spring, the r's arm lifts a pail on a rope, a ball rolls high up the sides of the a's bowl, the crossbar of the e is a block between two springs, the n and the 2 rock, the t's crossbar slides, and a boat rocks on the water in the D as a weight slides on its deck. Everything repeats every 12 s. Rolling Race: Slider, Discs and a Hoop Scene · Ordinate 2D ✓ Four ramps: with no friction nothing spins and the slider wins at g sin θ; a disc turns I = ½mr² and runs at g sin θ / 1.5, small or big, light or heavy; a hoop (a ring, I = ½m(R² + r²), nearly mr²) comes last at g sin θ / 1.9. Disc Rolling in a V-Track Scene · Ordinate 2D ✓ A disc rolls down one ramp and up the other: potential energy, kinetic energy of the motion and of the spin, and a constant total.

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