Bin Contents: PASCO GoCart, a stopper (with 4 rubber feet), a support rod, a black track bumper, a silver 90-deg clamp, and a timer.

Contents of your drawer….

For this experiment we need the digital angle finder and: (1) 100 gram, (2) 200 gram, and (1) 500 gram masses.

Obtain a track and a stand.

Note that the underside of the track has two sets of rubber feet in different locations.

The rubber feet close to the 120-cm end are offset.

Note that the underside of the track has two sets of rubber feet in different locations.

The rubber feet close to the 0-cm end are at the edge; these will be used to help anchor the track into place..

Note the shape and orientation of the 90-deg clamp; it must be assembled carefully.

Attach the support rod into the 90-deg clamp exactly as this image specifies.

Attach the combined support rod & 90-deg clamp into the stand exactly as this image specifies.

Elevate the 0-cm end of the track so that it rests onto the support rod.

The rubber feet  help anchor the track onto the support rod.

Attaching the bumper on the track is tricky!

Ensure that the square nut is more or less this far out of the screw/bolt.

Another view of the nut & screw/bolt.

The nut needs to slide into the upper grove at the 120-cm end of the track.

Note – it’s best to do this while the track is on its side!

Close-up view to show how the nut slips into the groove.

The digital angle finger will stick, magnetically, onto the yellow ruler side of the track.

The stopper usually keeps the cart at rest unless the angle of inclination is too large.