Definition of a compound machine and examples, the efficiency and mechanical advantage of compound machines.
Reviews the definition of a compound machine, examples of compound machines, and the efficiency and mechanical advantage of compound machines.
Learn about the quest to design a perpetual motion machine, one man's claim to have invented it, and how the hoax violates ethics in science.
Find out why the bicycle is the most efficient transportation machine ever invented.
Examines two compound machines: a bicycle and a pair of scissors.