Simple pulley used for lifting weights
Simple pulley used for lifting weights. In this the power must be equal to the weight to obtain equilibrium.
Only the input is driven; every other part of this model moves by physics (MuJoCo), and its ratios are measured. Run it live, change its parameters, or switch the friction off to see the output stop.
- Modelled as
- rope (friction on the sheave; 34-link hemp chain, its eyes pinned to the hand and the bag)
- Measured
- bag/hand 1.012 (no advantage in a fixed pulley), sheave turned by the rope at 10.66 of 10.64 rad/s per cm/s, pull 189.9 N against the weight's 191 N, pen ≤ 0.06 mm
- Notes
- Only the hand is driven (a slide joint in a guide along the rope, 6 cm/s). Negative control: the rope's contact with the sheave off → the bag does not rise (0.000).
Film (MP4) · GIF · Still (PNG) · Spec (YAML) · Model (MJCF)
