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Simple Machines
Test Description: Review of Simple Machines and Mechanical Advantage
Instructions: Answer all questions to get your test result.
1) How could you increase the mechanical advantage of a lever?
A
move the fulcrum closer to the weight
B
make the weight heavier
C
move the fulcrum farther from the weight
D
make the weight lighter
2) What is the mechanical advantage of a lever with an input arm of 100 cm and an output arm of 50 cm
A
2
B
1500
C
0.5
D
500
3) How can you increase the mechanical advantage of a plane?
A
increase the weight
B
decrease the weight
C
make the height taller
D
make the plane longer
4) What simple machines are used in a wheel barrow?
A
pulley, inclined plane
B
wheel, lever
C
inclined plane, lever
D
lever, pulley
5) A simple machine is used to lift a weight. What happens to he amount of work that must be done compared to doing the work without the machine?
A
it depends on which simple machine is used
B
it stays the same
C
it decreases
D
it increases
6) A simple machine is used to lift a weight. What happens to the amount of distance the force is exerted over if a machine is used?
A
it stays the same
B
it decreases
C
it can\'t be predicted
D
it increases
7) Which one of the following simple machines is a third class lever?
A
Crowbar
B
Wheel barrow
C
Bumper Jack
D
Fishing Pole
8) Which of the following is an example of a first class lever?
A
A seesaw
B
A ramp
C
A wheel barrow
D
A broom
9) A ramp is used to push a piano up three stairs. The height that it is being pushed up is 2 feet and the length of the ramp is 8 feet. What is the mechanical advantage of the ramp
A
0.25
B
16
C
2
D
4
10) What is the general formula for all simple machines and mechanical advantage?
A
Force in multiplied by force out
B
Force out multiplied by force in
C
Force in divided by force out
D
Force out divided by force in
*select an answer for all questions
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