U8405680-115 Rotating System on Air Bed

1000781 Includes Only:1 Air bed1 Rotating disc with cross bar1 Multiple pulley1 Release mechanism2 S-shaped hooks 1.00g1 S-shaped hook 2.00 g1 Set of weights (2x 12.5 g, 2x 25 g, 2x 50 g)1 Compressor for connection to mains1 Silicon tubing with by-pass valve (not illustrated)1 Pulley1 Stand rod with 3 securing screws and 2 screws for levelling1 Stand rod with 2 securing screws1 Stand rod, 250 mm1 Levelling disc1 Roll of cotton threadExperiment topics:Rotational motion: uniform and under constant accelerationNewton's equations of motion for rotational motionMoment of inertia and torqueMoment of inertia as determined by experimentSimple harmonic motion of rotating objectsApparatus for investigating frictionless rotation. A small rotating disc with a protractor scale supports a cross bar to which weights can be attached. The disc is supported by a bed of air in which its axis is centred. A driving weight is suspended from a hook at the end of a string that is passed over a single pulley on one side and a multiple pulley on the other. The rotation is very slow and can be measured using a stopwatch by hand. Alternatively, a digital timer may be used. This can be started by a mechanism that is supplied with the kit and halted by a signal from a laser reflection sensor when the wheel passes through angle zero.