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Terms in this set (17)
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
Update) Questions & Correct Answers (100%
Correct Verified Answers) Already Graded A+
Save
Terms in this set (17)
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
