
Mechanical Advantage and Efficiency Concepts

Interactive Video
•
Physics, Mathematics, Science
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary difference between mechanical advantage and mechanical efficiency?
Mechanical advantage compares input and output forces, while mechanical efficiency compares input and output work.
Mechanical advantage is always greater than 1, while mechanical efficiency is always less than 1.
Mechanical advantage and mechanical efficiency are the same concepts.
Mechanical advantage is measured in Newtons, while mechanical efficiency is measured in Joules.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a machine has a mechanical advantage of 1, what does this indicate about the input and output forces?
The input force is less than the output force.
The machine is not functioning properly.
The input force is greater than the output force.
The input force equals the output force.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a mechanical advantage greater than 1 signify?
The machine is losing force.
The output force is greater than the input force.
The machine is not efficient.
The input force is greater than the output force.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a scenario where the mechanical advantage is less than 1, what can be inferred?
The output force is greater than the input force.
The machine is gaining force.
The machine is perfectly efficient.
The input force is greater than the output force.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is mechanical advantage calculated?
Input work divided by output work.
Output force divided by input force.
Output work divided by input work.
Input force divided by output force.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the unit of mechanical advantage?
Newtons
Joules
It is unitless
Watts
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are machines never 100% efficient?
Due to the perfect conversion of energy.
Because they are always losing energy.
Due to friction which converts some work into heat.
Because they are always gaining energy.
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