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Work And Machines
Test Description: Review
Instructions: Answer all questions to get your test result.
1) Which example will give you more force to do more work?
A
more distance between the lever and the fulcrum gives you more force
B
less distance between the lever and the fulcrum gives you more force
C
an equal distance between the lever and the fulcrum gives you more force
D
none of these are correct
2) An inclined plane allows you to do ______________ work with_____________ force.
A
less, more
B
more, less
C
less, less
D
more, more
3) Using an incline plane, what happens to the amount of work that has to be done?
A
The amount of work increases.
B
The amount of work decreases then increases
C
The amount of work decreases.
D
The amount of work remains the same
4) What type of ramp would a person use if they wanted to use the least amount of force to get to the top?
A
a longer distance ramp
B
a shorter distance ramp
C
a medium distance ramp
D
None of the above
5) Which is an example of a wedge?
A
fork
B
spoon
C
bowl
D
knife
6) What is the purpose of using a wedge?
A
allows you to exert force over a distance
B
none of the above
C
keeps objects together
D
separates object
7) What type of machine includes inclined plane that is wrapped around a central core?
A
a wedge
B
a screw
C
an axe
D
a knife
8) Which is a function of a screw?
A
holds things out
B
holds things in
C
holds things together
D
holds things apart
9) If the resistance is between the effort and fulcrum, what class of lever will you have?
A
a second class lever
B
a first class lever
C
None of the above
D
a third class lever
10) What type of simple machine will allow you to change the direction of the resistance?
A
a ramp
B
a lever
C
a pulley
D
a wedge
*select an answer for all questions
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