Phil conducts an experiment in which he tries to spin a pencil on its tip. He fails initially but is successful after sticking it through a circle of cardboard. He explains why it works and mentions the "smart" way to describe the phenomenom: the conservation of angular momentum.

Phil explains and illustrates Newton's first law of motion and angular momentum using a 20 kg weight. In the experiment, they are having trouble spinning the weight fast enough. They eventually spin it fast enough that it doesn't topple over immediately.

Buster Beaker explains how high and low tides are affected by the gravity of the moon and the sun. He illustrates the phenomenon using a cookie, a mushroom, and a lemon.

Beakman defines machines and acts like Archimedes to explain why a screw is a machine. He illustrates how he used a screw mechanism to remove water from a container to reduce the amount of work required to complete the task. Beakman then explains more about mechanical advantage and simple machines like the inclined plane.

Phil conducts an experiment in which he makes a chain fly into the air due to the force of gravity. He explains how the experiment works and demonstrates it at a larger scale.