FCTC Written Study Guide
Be aware of questions with absolutes. What are a few absolutes and why watch out for them? -
ANS-Examples of absolutes are "virtually, constantly, all the time, completely, limitless, never,
handiest, sole, undeniable, or totally".
Absolutes or any sort of wide statements need to be suspected as wrong.
Belt and Pulley Systems - ANS-Two or greater pulleys in commonplace to a belt. If the pulleys
are of differing pitch diameters, a mechanical benefit is found out. Doesn't rely on ratio of
enamel as with gears and sprockets, only pitch diameter.
Class 1 Levers - ANS-Fulcrum is in the center, with the attempt (input) force on one side of the
fulcrum and resistance (output) on the other aspect.
Mechanical Advantage greater or much less than 1
Ex: Seesaw, Crowbar, Pair of Scissors.
Class 2 Levers - ANS-Resistance is inside the center, the effort is applied on one side of the
resistance and the fulcrum on the other side.
Mechanical Advantage constantly greater than 1
Ex: Wheelbarrow, nutcracker, bottle opener, or the brake pedal of a vehicle.
Class three Levers - ANS-Effort in the center, the resistance is on one side of the attempt and
the fulcrum is positioned on the alternative aspect.
Mechanical Advantage constantly much less than 1
Ex: Pair of tweezers, human mandible
Classes of Levers - ANS-Class 1, Class 2, Class 3
For a Rope and Pulley System that may be a Block and Tackle, is characterised by means of: -
ANS-* If rope does no longer use up or shop electricity, then it's mechanical benefit is the range
of components of the rope that act at the load.
- if the anchor knot is at the load ("A", "D", and "E") then mechanical benefit may be
extraordinary.
(1:1, 3:1, five:1, and many others.)
- if the anchor knot is on the anchor ("B", "C") then mechanical advantage might be even. (2:1,
four:1, 6:1, and so forth.)
- to calculate haul distance, multiply the space need to move by using the mechanical
advantage. (three:1 ratio, 20 feet to haul, multiply three x 20 ft to get total of 60ft)
Be aware of questions with absolutes. What are a few absolutes and why watch out for them? -
ANS-Examples of absolutes are "virtually, constantly, all the time, completely, limitless, never,
handiest, sole, undeniable, or totally".
Absolutes or any sort of wide statements need to be suspected as wrong.
Belt and Pulley Systems - ANS-Two or greater pulleys in commonplace to a belt. If the pulleys
are of differing pitch diameters, a mechanical benefit is found out. Doesn't rely on ratio of
enamel as with gears and sprockets, only pitch diameter.
Class 1 Levers - ANS-Fulcrum is in the center, with the attempt (input) force on one side of the
fulcrum and resistance (output) on the other aspect.
Mechanical Advantage greater or much less than 1
Ex: Seesaw, Crowbar, Pair of Scissors.
Class 2 Levers - ANS-Resistance is inside the center, the effort is applied on one side of the
resistance and the fulcrum on the other side.
Mechanical Advantage constantly greater than 1
Ex: Wheelbarrow, nutcracker, bottle opener, or the brake pedal of a vehicle.
Class three Levers - ANS-Effort in the center, the resistance is on one side of the attempt and
the fulcrum is positioned on the alternative aspect.
Mechanical Advantage constantly much less than 1
Ex: Pair of tweezers, human mandible
Classes of Levers - ANS-Class 1, Class 2, Class 3
For a Rope and Pulley System that may be a Block and Tackle, is characterised by means of: -
ANS-* If rope does no longer use up or shop electricity, then it's mechanical benefit is the range
of components of the rope that act at the load.
- if the anchor knot is at the load ("A", "D", and "E") then mechanical benefit may be
extraordinary.
(1:1, 3:1, five:1, and many others.)
- if the anchor knot is on the anchor ("B", "C") then mechanical advantage might be even. (2:1,
four:1, 6:1, and so forth.)
- to calculate haul distance, multiply the space need to move by using the mechanical
advantage. (three:1 ratio, 20 feet to haul, multiply three x 20 ft to get total of 60ft)
