Wheel and Axle
A circular wheel directly connected to a circular shaft or axle, this device rotates around the common axis and has the ability to increase a rotational force instead of a linear force.
A wheel and axle reduces friction for moving something.
A wheel and axle reduces friction for moving something.
Slingshot Cars
Goal: to create a slingshot car which will be propelled across the floor at least 10 feet by a single slingshot