Study rotational acceleration, moment of inertia, angular velocity, and other concepts with this complete kit of high-quality apparatus and attachments.

The kit includes:

Rotating Support

Mount an object directly on the cross-shaped platform. The support is made of lightweight aluminum to keep its moment of inertia low. The platform carries a torque drum with smoothly rotating ball bearings. Less than 5 grams are needed to start the drum rotating. We've mounted a pin on the outside of the drum, over which you can hook the end of a cord. Use a pulley and falling weight for angular acceleration experiments and moment of inertia determinations.

Mass & Bar Attachment

Long aluminum support bar of this apparatus measures 86cm. Two tapped holes let you clamp it onto the Rotating Support with a pair of included thumbscrews. A series of holes down the length of the bar let you attach the included pair of nickel-plated 2.5kg masses at any of seven different radii from the center. Also includes four cap screws.

Disk

Fit this disk onto the Rotating Support in order to carry out experiments that illustrate moment of inertia. Made of iron, the disk measures about 250mm in diameter by 13mm thick, and weighs about 4.7kg. One face of the disk has a clearly marked reference line through its diameter.

Ring

Made to conform to the diameter and mass specifications of the Disk, this iron ring is about 13mm thick, with a height of 45mm. A reference line lets you keep track of its motion as it rotates.

Kit also includes a ball-bearing table clamp pulley and complete instructions for studying the principles of rotational motion and inertia, angular momentum and energy.