FCTC Written Study Guide Latest Update -

FCTC Written Study Guide Latest Update - Questions and 100% Verified Correct Answers Guaranteed A+

Be mindful of questions with absolutes. What are some absolutes and why watch out for them? - CORRECT ANSWER: Examples of absolutes are "absolutely, always, forever, completely, infinite, never, only, sole, undeniable, or wholly".Absolutes or any sort of broad statements should be suspected as wrong.

Belt and Pulley Systems - CORRECT ANSWER: Two or more pulleys in common to a

belt. If the pulleys are of differing pitch diameters, a mechanical advantage is realized.Doesn't depend on ratio of teeth as with gears and sprockets, only pitch diameter.

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

Classes of Levers - CORRECT ANSWER: Class 1, Class 2, Class 3

For a Rope and Pulley System that is a Block and Tackle, is characterized by: -

CORRECT ANSWER: * If rope does not dissipate or store energy, then it's mechanical advantage is the number of parts of the rope that act on the load.

• if the anchor knot is at the load ("A", "D", and "E") then mechanical advantage will be

odd.(1:1, 3:1, 5:1, etc.)

• if the anchor knot is at the anchor ("B", "C") then mechanical advantage will be even.

(2:1, 4:1, 6:1, etc.)

• to calculate haul distance, multiply the distance need to go by the mechanical

advantage. (3:1 ratio, 20 ft to haul, multiply 3 x 20 ft to get total of 60ft)

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