FCTC Written Study Guide with questions and well elaborated answers
Classes of Levers - correct answer-Class 1, Class 2, Class 3
Class 1 Levers - correct answer-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 - correct answer-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 - correct answer-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 - correct answer-Lever machine consisting of a beam or rigid rod pivoted
at a fixed hinged, or fulcrum.
Input Force = Effort
Output Force = Load or Resistance
What does "fre, 123" mean? - correct answer-Fulcrum is in the middle for Class 1 Levers
Resistance (output) in middle for Class 2
Effort (input) in the middle for Class 3
Formula for Determining the head pressure difference between an intake and output -
correct answer-1 vertical foot = 0.433 psi
1 psi = 2.31 vertical feet
Overall Test Overview: - correct answer-1) 30 minute period to read 2 essays
- 2 hour time limit begins to answer (100 questions).
2) Watch 2 short videos and answer (20 questions) based on the scenarios.
Classes of Levers - correct answer-Class 1, Class 2, Class 3
Class 1 Levers - correct answer-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 - correct answer-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 - correct answer-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 - correct answer-Lever machine consisting of a beam or rigid rod pivoted
at a fixed hinged, or fulcrum.
Input Force = Effort
Output Force = Load or Resistance
What does "fre, 123" mean? - correct answer-Fulcrum is in the middle for Class 1 Levers
Resistance (output) in middle for Class 2
Effort (input) in the middle for Class 3
Formula for Determining the head pressure difference between an intake and output -
correct answer-1 vertical foot = 0.433 psi
1 psi = 2.31 vertical feet
Overall Test Overview: - correct answer-1) 30 minute period to read 2 essays
- 2 hour time limit begins to answer (100 questions).
2) Watch 2 short videos and answer (20 questions) based on the scenarios.
