FCTC Math TEST QUESTIONS WITH COMPLETE
SOLUTIONS 100% VERIFIED ANSWERS
FRE123 - ✔✔Three Classes of Levers
- Class 1 Fulcrum
- Class 2 Resistance
- Class 3 Effort
Class 1 lever - ✔✔Fulcrum in the middle, the effort is applied on one side of the fulcrum and
the resistance on the other side for example, seesaw, a crowbar or a pair of scissors.
- Mechanical advantage may be greater or less than one
Class 2 Lever - ✔✔resistance in the middle, the effort is applied on one side of the
resistance, and the fulcrum is located on the other side for example, a wheelbarrow, a
nutcracker, a bottle opener.
- Mechanical advantage is always greater than 1
Class 3 Lever - ✔✔effort in the middle, the resistance is on one side of the effort, and the
fulcrum is located on the other side, for example, a pair of tweezers or the human mandible or
a bicep
- Mechanical Advantage is always less than 1
Formula for mechanical effort - ✔✔Resistance X Height = Force X Length
Formula for finding the circumference of a circle - ✔✔C=2πr
SOLUTIONS 100% VERIFIED ANSWERS
FRE123 - ✔✔Three Classes of Levers
- Class 1 Fulcrum
- Class 2 Resistance
- Class 3 Effort
Class 1 lever - ✔✔Fulcrum in the middle, the effort is applied on one side of the fulcrum and
the resistance on the other side for example, seesaw, a crowbar or a pair of scissors.
- Mechanical advantage may be greater or less than one
Class 2 Lever - ✔✔resistance in the middle, the effort is applied on one side of the
resistance, and the fulcrum is located on the other side for example, a wheelbarrow, a
nutcracker, a bottle opener.
- Mechanical advantage is always greater than 1
Class 3 Lever - ✔✔effort in the middle, the resistance is on one side of the effort, and the
fulcrum is located on the other side, for example, a pair of tweezers or the human mandible or
a bicep
- Mechanical Advantage is always less than 1
Formula for mechanical effort - ✔✔Resistance X Height = Force X Length
Formula for finding the circumference of a circle - ✔✔C=2πr
