A hoop and a disk are released simultaneously at the top of a ramp. Several other objects with different moments of inertia are also available.

M2, plank near F0

Any object can be used to set the incline of the board. Make sure there is something at the end of the track to stop the objects from falling to the ground, such as a styrofoam board. To ensure same release time, use a meter stick to get hold objects still before quickly removing the stick in the direction of the track. PIRA DCS 1Q10.30