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PhySci Chapter 14
Test Description: Ch. 14
Instructions: Answer all questions to get your test result.
1) an arrangement of fixed and moveable pulleys
A
wedge
B
fulcrum
C
block and tackle
D
pitch
2) any reduction in an effort force will be paid for by an increased distance through which the force must act
A
resistance
B
distance principle
C
efficiency
D
mechanical advantage
3) the percent of work input returned as work output
A
distance principle
B
resistance
C
efficiency
D
mechanical advantage
4) the force applied to a simple machine to make it work
A
work
B
effort
C
efficiency
D
power
5) the fixed point about which a lever turns
A
wedge
B
fulcrum
C
screw
D
pitch
6) a slanted surface used to raise objects
A
pulley
B
block and tackle
C
lever
D
inclined plane
7) a rigid bar capable of turning about a fulcrum
A
wedge
B
lever
C
screw
D
pitch
8) the amount by which a machine magnifies effort (or force)
A
efficiency
B
resistance
C
distance principle
D
mechanical advantage
9) the distance between two adjacent threads on a screw
A
effort
B
work
C
efficiency
D
pitch
10) the amount of work done in a given period of time
A
resistance
B
power
C
efficiency
D
effort
11) a modified lever consisting of a rope that moves around a grooved wheel
A
inclined plane
B
pulley
C
screw
D
fulcrum
12) the force against which a simple machine works; often the weight of an object being moved
A
resistance
B
mechanical advantage
C
power
D
effort
13) an incline plane wrapped around a cone or cylinder
A
fulcrum
B
block and tackle
C
wedge
D
screw
14) two inclined planes conected back-to-back
A
block and tackle
B
pulley
C
wedge
D
screw
15) the product of a force applied on an object and the distance the object moved
A
work
B
power
C
effort
D
pitch
*select an answer for all questions
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