FCTC Written Study Guide Questions with
100% Correct Answers
Classes of Levers
Class 1, Class 2, Class 3
Class 1 Levers
Fulcrum is in the middle, with the effort (input) force on one side of the fulcrum and
resistance (output) on the other side.
Mechanical Advantage greater or less than 1
Ex: Seesaw, Crowbar, Pair of Scissors.
Class 2 Levers
Resistance is in the middle, the effort is applied on one side of the resistance and the fulcrum
on the other side.
Mechanical Advantage always greater than 1
Ex: Wheelbarrow, nutcracker, bottle opener, or the brake pedal of a car.
Class 3 Levers
Effort in the middle, the resistance is on one side of the effort and the fulcrum is located on
the other side.
Mechanical Advantage always less than 1
Ex: Pair of tweezers, human mandible
Lever Definitions
100% Correct Answers
Classes of Levers
Class 1, Class 2, Class 3
Class 1 Levers
Fulcrum is in the middle, with the effort (input) force on one side of the fulcrum and
resistance (output) on the other side.
Mechanical Advantage greater or less than 1
Ex: Seesaw, Crowbar, Pair of Scissors.
Class 2 Levers
Resistance is in the middle, the effort is applied on one side of the resistance and the fulcrum
on the other side.
Mechanical Advantage always greater than 1
Ex: Wheelbarrow, nutcracker, bottle opener, or the brake pedal of a car.
Class 3 Levers
Effort in the middle, the resistance is on one side of the effort and the fulcrum is located on
the other side.
Mechanical Advantage always less than 1
Ex: Pair of tweezers, human mandible
Lever Definitions
