Add Leaderboard video-generation first-frame assets (batch 107/303)

.gitattributes

@@ -17864,3 +17864,72 @@ Leaderboard/Video[[:space:]]Generation/SinglePhysics/BalloonTether__bg238__KTaDx
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Leaderboard/Video Generation/SinglePhysics/BalloonTether__bg238__OB4KBF_trajectory/caption.txt

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+The purple reflective balloon ascends vertically as buoyancy exceeds gravity. During ascent, the tether transitions from slack to taut, causing the connecting line to elongate. Aligned along the shortest path toward the center of mass, the tether constrains lateral displacement while permitting vertical ascent. A dynamic equilibrium emerges among buoyancy, gravity, air resistance, and line tension. This force balance stabilizes the ascent process, precluding further acceleration, while the object remains suspended by the constrained tether.

Leaderboard/Video Generation/SinglePhysics/BalloonTether__bg238__PaQnPR_trajectory/caption.txt

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+A gray matte balloon ascends vertically as buoyancy overcomes gravity. The tether extends toward the yellow wall, straightening during motion and transitioning from slack to taut. The rope aligns along the shortest path between the anchor point and the balloon's center of mass, constraining lateral displacement while permitting vertical motion. Buoyancy, gravity, air resistance, and rope tension achieve dynamic equilibrium, stabilizing the ascent.

Leaderboard/Video Generation/SinglePhysics/BalloonTether__bg238__SQLCyK_trajectory/caption.txt

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+A blue tethered balloon ascends vertically, driven by buoyancy exceeding gravity. The tether, fixed to the wall, elongates during ascent, transitioning from slack to taut. This configuration adheres to a geodesic path between the anchor point and the balloon's center of mass, restricting lateral drift and permitting upward displacement. Dynamic equilibrium forms when buoyancy balances gravity, air resistance, and tether tension, locking the system into a stable configuration.

Leaderboard/Video Generation/SinglePhysics/BalloonTether__bg238__U18Qhe_trajectory/caption.txt

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+An aluminum tethered balloon ascends vertically due to buoyant force exceeding gravitational force. The tether anchored at a fixed point transitions from slack to taut during ascent, resulting in elongation. The tether aligns along the shortest path between the anchor point and the balloon's center of mass, constraining lateral displacement while permitting vertical ascent. Dynamic equilibrium is established among buoyant force, gravitational force, aerodynamic drag, and tether tension. The metallic surface stabilizes at the tether's limit position, maintaining a linear trajectory against aerodynamic and tether resistance.

Leaderboard/Video Generation/SinglePhysics/BalloonTether__bg238__YXoikn_trajectory/caption.txt

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+A red-orange tethered balloon ascends vertically, driven by buoyancy exceeding gravitational force. As the ascent continues, the tether elongates, transitioning from a slack to a taut state. The tether aligns along the geodesic path between the suspension point and the center of mass, constraining lateral displacement while permitting vertical elevation. Buoyancy, gravity, air resistance, and tether tension interact until dynamic equilibrium is achieved. The balloon ultimately stabilizes at the maximum extension of the tether, maintaining a stable trajectory, wherein the upward lifting force balances the downward tension and drag forces.

Leaderboard/Video Generation/SinglePhysics/BalloonTether__bg238__eomwUS_trajectory/caption.txt

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+A yellow-green tethered balloon ascends vertically under conditions where buoyancy exceeds gravitational force. As it ascends, the tether straightens, gradually transitioning from slack to taut, thereby constraining lateral displacement along the shortest path. Dynamic equilibrium is established among buoyancy, gravity, aerodynamic drag, and tether tension. Net force equilibrium stabilizes the system, maintaining a constant altitude dictated by the interaction between buoyancy, drag, and tether tension.

Leaderboard/Video Generation/SinglePhysics/BalloonTether__bg238__i0Xo6b_trajectory/caption.txt

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+A red wooden tethered balloon undergoes vertical ascent as buoyancy exceeds gravitational force. The tether extends from a fixed point, elongating with the ascent motion and gradually becoming taut. The tether aligns along the shortest path between the fixed point and the balloon's center of mass, constraining lateral displacement while permitting continued vertical ascent. Dynamic equilibrium is established among buoyancy, gravity, air resistance, and rope tension. The red wooden body remains stable within the fluid medium, while the tether sustains tension against the upward pull.

Leaderboard/Video Generation/SinglePhysics/BalloonTether__bg238__oW3j3Z_trajectory/caption.txt

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+A beige, rough tethered balloon ascends vertically as the buoyant force exceeds gravitational force. As the ascent elongates the tether, it transitions from a slack configuration to a taut state. The tether aligns along the shortest path, constraining lateral displacement while permitting continued vertical ascent. Buoyancy, gravity, air resistance, and tether tension acting on the floating body attain dynamic equilibrium.

Leaderboard/Video Generation/TriplePhysics/AccelConcaveSpin_FrictionStop_BalloonFloat__bg202__07uAYc_trajectory/caption.txt

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+The salmon-colored wheel and the pale blue arm crank undergo angular acceleration, propelling two hollow yellow spheres onto surfaces of differing material properties. One sphere encounters low kinetic friction, traversing a substantial distance, whereas the other decelerates rapidly due to significant energy dissipation. Concurrently, the yellow keyboard rotates with increasing angular velocity. A blue embossed balloon ascends vertically under buoyant force, contacting the rotating edge of the interception device. Following contact, tangential momentum transfer induces outward deflection of the sphere along a curved trajectory governed primarily by centrifugal effects and inertia.