| { | |
| "description": "The task involves a ball connected with a lightweight rod which can rotate around one of its ends. Then, the ball is lifted and released.", | |
| "prompt": "Static frontal camera view: A heavy metal ball (mass ≈ 318 g) is fixed to the tip of a lightweight rigid rod, which rotates freely about a stationary horizontal axle mounted between two vertical posts atop a black perforated optical table. The rod is initially lifted to a horizontal position, with the ball extending out to one side. Upon release, the ball follows pendulum motion: it accelerates downward past the vertical datum, ascends on the opposite side, and continues oscillating back and forth over numerous cycles, its amplitude slowly and gradually diminishing due to frictional losses.", | |
| "assets": { | |
| "ball": { | |
| "model": "../../assets/obj/ball-6.obj", | |
| "material": { | |
| "metal": { | |
| "mass": 0.3175, | |
| "density": 2807.3164, | |
| "friction": 0.01, | |
| "restitution": 0.01 | |
| } | |
| } | |
| } | |
| }, | |
| "tasks": { | |
| "default": { | |
| "assets": ["ball"], | |
| "translation": { | |
| "ball": [0.373960, 0.490590, 0.445133] | |
| }, | |
| "orientation": { | |
| "ball": [0, 90, 0] | |
| }, | |
| "fixed": { | |
| "ball": false | |
| }, | |
| "kinematic": { | |
| "ball": false | |
| }, | |
| "record": { | |
| "assets": ["ball"], | |
| "dim": ["x", "y", "z"], | |
| "fps": 30 | |
| } | |
| } | |
| } | |
| } |