Jerry on his way to buy the latest edition of the newspaper, accidentally rolls his coin into a construction site. The coin causes a chain reaction that traps Tom into a stack of bricks.
Beakman explains what a pulley is and how an elevator uses pulleys. Beakman dresses like Elisha Otis (inventor of the safety elevator) and explains how the elevator works and how he made it safe.
Sophie illustrates the six basic simple machines that exist and explains how they are useful in our everyday lives. She defines force and work and mentions that simple machines reduce the amount of work required for a task.