Lock a body into circular orbit using a radial force, measure the centripetal acceleration a = v²/r, and find out what happens when the string snaps.
Drag a Circle body to the canvas. In Force Settings, add a Central Force pointing toward the origin. Set the magnitude to keep the body in a circular path at radius r = 5 m. Hint: start with F = mv²/r and tune until the orbit is stable.
Enable the graph panel and plot acceleration magnitude vs time. It should be constant. Verify against the formula a = v²/r using the measured speed from the velocity graph.
Double the initial tangential velocity. What force is now needed to maintain the same orbit radius? Verify that F ∝ v².
Remove the central force mid-orbit (use a timed force event or manually stop it). Observe: the body travels in a straight line tangent to the circle — Newton's First Law in action.
Add gravity to the scene. The body now has varying speed around the orbit (slower at top, faster at bottom). Plot the normal force vs position angle to see how it varies.