222 live labs · classes 1-10

Guessing won’t get you through.
That’s the point.

Every mission drops you into something breaking — a crane tipping, a circuit overloading, a pond losing its fish. You get one dial and a real lab. Move it until both sides of the equation agree, and the lab tells you the moment they do.

Free · No sign-up · Works on any phone

Torque balanceRunning
Torque rig. Counterweight distance at 0.92 m. Load moment 21.6 kN·m, Counter moment 8.28 kN·m. Currently load moment is over by 13.32 kN·m.TUNINGLOAD MOMENTCOUNTER MOMENT
t = 0.0s

Load moment

21.6kN·m

Counter moment

8.28kN·m

0.92 m

Torque rig. Counterweight distance at 0.92 m. Load moment 21.6 kN·m, Counter moment 8.28 kN·m. Currently load moment is over by 13.32 kN·m.

Drag the control. The crane stops creeping when both moments match — no guessing, the numbers have to agree.

Four worlds. One way in.

Each world is the same deal — a real apparatus, a real equation, one thing you control.