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WorksheetsSimple Machines Analysis
Total questions: 24
Worksheet time: 12mins
True or false – Machines reduce the amount of work needed to get a job done.
True
False
True or false – When there is friction, the AMA will be less than the TMA.
True
False
What is the best definition of TMA (theoretical mechanical advantage)?
How much a machine multiples your force, including the effect of friction.
How much a machine multiples your force, if there was NO friction.
The percentage of input work that is turned into output work by a machine.
The weight of the object being lifted by a machine.
What is the dE (effort distance) of this pulley?
20 Newtons
8 Newtons
4 meters
12 meters
What is the FE (effort force) of this pulley?
20 Newtons
8 Newtons
4 meters
12 meters
What is the dL (load distance) of this pulley?
20 Newtons
8 Newtons
4 meters
12 meters
What is the FL (load force) of this pulley?
20 Newtons
8 Newtons
4 meters
12 meters
What is the TMA (theoretical mechanical advantage) of this pulley?
0.33
2.5
3
4
What is the AMA (actual mechanical advantage) of this pulley?
0.33
2.5
3
4
What is the input work of this pulley?
32 Joules
80 Joules
96 Joules
240 Joules
What is the output work of this pulley?
32 Joules
80 Joules
96 Joules
240 Joules
What is the efficiency of this pulley?
12%
83%
100%
120%
True or False - This machine has friction.
True
False
If this machine does NOT have friction, what is the missing load force?
6 N
12 N
24 N
48 N
What is the difference between TMA and AMA?
TMA is the mechanical advantage a machine would have with NO friction.
AMA is the mechanical advantage a machine would have with NO friction.
You have just built a pulley where Work input = Work output. Which of the following statements must also be true?
The pulley has no friction.
The pulley's AMA equals its TMA.
The pulley has 100% efficiency.
The pulley must be magical, because pulleys in the real world always lose some energy.
What is the work input of this machine?
20 Joules
110 Joules
120 Joules
330 Joules
What is the work output of this machine?
20 Joules
110 Joules
120 Joules
330 Joules
What is the Theoretical Mechanical Advantage (TMA) of this machine?
2.75
3
4
6
What is the Actual Mechanical Advantage (AMA) of this machine?
2.75
3
4
6
What is the efficiency of this machine?
10%
30%
66%
92%
What is the best definition of AMA (actual mechanical advantage)?
How much a machine multiples your force, including the effect of friction.
How much a machine multiples your force, if there was NO friction.
The percentage of input work that is turned into output work by a machine.
The weight of the object being lifted by a machine.
What is the best definition of Load Force ?
How much a machine multiples your force, including the effect of friction.
How much a machine multiples your force, if there was NO friction.
The percentage of input work that is turned into output work by a machine.
The weight of the object being lifted by a machine.
What is the best definition of Efficiency ?
How much a machine multiples your force, including the effect of friction.
How much a machine multiples your force, if there was NO friction.
The percentage of input work that is turned into output work by a machine.
The weight of the object being lifted by a machine.
