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FCTC TEST PREP QUESTIONS AND ANSWERS
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FCTC TEST PREP QUESTIONS AND ANSWERS
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FCTC TEST PREP QUESTIONS AND ANSWERSA belt and pulley system is characterized by - Answers -two or more pulleys in common
to a belt.
What does a belt and pulley system allow for? - Answers -mechanical power, torque,
and speed to be transmitted across axles
How is mechanical advantage realized? - Answers -if the pulleys are different diameters
what is a pulley? - Answers -a wheel on an axle or shaft that is designed to support
movement and change of direction of a cable or belt along its circumference
Why are pulleys used? - Answers -lift loads
apply forces
trasmit power
What is usually the drive element of a pulley? - Answers -rope, cable, belt or chain that
runs over the pulley inside the groove
Pulleys are assembled to form what - Answers -a block and tackle in order to provide
mechanical advantage to apply large forces
rope and pulley systems (block and tackle) are characterized by what? - Answers -the
use of a single continuous rope to transmit a tension force around one or more pulleys
to lift or move a load
the rope may be a light line or a strong cable
How are levers classified? - Answers -by relative positions of the fulcrum and the input
and output forces.
allows identification by the relative locations of the fulcrum, the resistance, and the
effort.
Class 1 Lever - Answers -Fulcrum in the middle
the effort is applied on one side of the fulcrum and the resistance on the other side.
Examples of Class 1 levers: - Answers -see saw, crowbar, scissors
What is the mechanical advantage of a Class 1 lever? - Answers -It may be greater than
or less than 1
Class 2 Lever - Answers -Resistance in the middle.
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