Design and ride your own roller coaster! Balance gravity, centripetal force, and kinetic energy as your cart navigates loops, hills, and drops — and see if your design passes the physics test.
Energy conservation: potential energy at the top of a hill converts to kinetic energy at the bottom. A loop requires enough speed at the top so centripetal force ≥ gravity. Too slow = the cart falls. Too fast = dangerous g-forces.
Drag track segments to build your layout. Press launch to ride. The energy meter shows where speed is gained and lost. Try to complete the loop without stopping or exceeding safe g-forces.
The first roller coasters were 17th-century Russian ice slides — purely gravity-powered. Modern coasters are engineered to within millimetres; the world's fastest reaches 240 km/h using electromagnetic launch rails.