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Work And Machines 3
Test Description: Ch 8 Test
Instructions: Answer all questions to get your test result.
1) Which of the following is NOT a wedge?
A
knife
B
ramp
C
chisel
D
plow
2) Where is the input force of a wheel and axle exerted?
A
a circular distance
B
an inclined plane
C
a rectangular distance
D
a spiral
3) Greg applies a force of 100 N to move a box 5 meters. How much work did he do?
A
500 N
B
5 J
C
100 J
D
500 J
4) If you exert 20 N of force on a screwdriver and it exerts 40 N on a paint can lid, what is the screwdriver's mechanical advantage?
A
20
B
40
C
1
D
2
5) Which of the following is a compound machine?
A
first class lever
B
wheel and axle
C
block and tackle pulley
D
screw
6) What is the equation for work?
A
work = force x time
B
Work = force x distance
C
work = force / distance
D
work = force / time
7) What is the equation for power?
A
power = work / distance
B
power = work x time
C
power = work / time
D
power = work x distance
8) Which is a complex machine?
A
paint can opener
B
scissors
C
wheel barrow
D
ramp
9) No question
10) No question
*select an answer for all questions
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