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Work And Machines
Test Description: Review
Instructions: Answer all questions to get your test result.
1) In what order do the effort, fulcrum, and resistance appear on a second class lever?
A
effort-fulcrum-resistance
B
resistance-effort-fulcrum
C
fulcrum-effort-resistance
D
effort-resistance-fulcrum
2) Which of the following would increase the output force of a lever?
A
decrease the distance between the resistance and the effort
B
increase the distance between the effort and the fulcrum
C
decrease the distance between the effort and the fulcrum
D
increase the distance between the resistance and the fulcrum
3) Which of the following is NOT a type of pulley system?
A
advantageous
B
fixed
C
moveable
D
combination
4) Why can a larger steering wheel be easier to use than a smaller steering wheel?
A
A larger wheel has a greater mass.
B
A smaller wheel has a greater mass
C
A smaller wheel requires less effort force.
D
A larger wheel requires less effort force
5) Which kind of simple machine is NOT part of a bicycle?
A
an inclined plane
B
a lever
C
a pulley
D
a wheel and axle
6) What type of machine is a pair of scissors?
A
compound-lever and wedge
B
compound- inclined plane and lever
C
simple-lever
D
simple-wedge
7) Which two simple machines are part of an axe?
A
inclined plane and screw
B
lever and wedge
C
wedge and inclined plane
D
blade and handle
8) A spindle connects two wheels with fixed axles by a fan belt. If the effort wheel is larger than the resistance wheel, which axle will turn faster?
A
the resistance axle
B
the effort axle
C
The wheel size does not affect the axle-turning rate
D
Both axles turn at the same rate
9) What is the advantage of adding more pulleys to a system of pulleys?
A
It adds more weight to the resistance force.
B
It increases the amount of rope required to raise the resistance force.
C
It decreases the required effort force.
D
It adds more friction to the pulley system.
10) ______________ can come from any machine that helps you do work.
A
Mechanical advantage
B
Mechanical disadvantage
C
Mechanical work
D
Mechanical leverage
*select an answer for all questions
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