Solutions in Physical Science
Presentation
•
Physics
•
10th Grade
•
Hard
Joseph Anderson
FREE Resource
28 Slides • 3 Questions
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Multiple Choice
Which statement about the actual mechanical advantage of a machine is true?
The actual mechanical advantage is greater than one if the input force is greater than the output force
The actual mechanical advantage of a machine is greater than its ideal mechanical advantage when the output force is greater than the input force
The actual mechanical advantage of a machine is always less than its ideal mechanical advantage
The actual mechanical advantage of a machine is never affected by friction
30
Multiple Choice
If a lever raises a large rock 0.1 meters when the other end of the lever moves downward 2 meters, what is the ideal mechanical advantage of the lever
0.05
.5
2
20
31
Multiple Choice
A machine is used to accomplish 300 J of work. If the efficiency of the machine is 60 percent, what is the necessary work input?
180 J
360 J
500 J
750 J
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