Physics Principles and Problems 2009

Section 10.2 : Machines

Self-Check Quizzes

1
The _____ of a machine is equal to the resistance force divided by the effort force.
  Need a Hint?
A)efficiency
B)ideal mechanical advantage
C)mechanical advantage
D)torque
2
What is the MA of this pulley?

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A)0
B)1
C)2
D)3
3
What type of simple machine is shown?

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A)inclined plane
B)lever
C)screw
D)wedge
4
Which part of the human body acts as a fulcrum when you walk?
A)foot
B)head
C)hip
D)thigh
5
A(n) _____ machine has equal output and input work and its efficiency is 100 percent.
A)compound
B)efficient
C)ideal
D)real
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