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Using Machines - Quiz
  • 1. A force that opposes sliding motion between two touching surfaces.
A) input force
B) efficiency
C) friction
D) output force
E) machanical advantage
  • 2. Output force divided by input force equals ________ .
A) mechanical advantage
B) human advantage
C) distance output
D) conservation
E) efficiency
  • 3. Lubrication can reduce the _______________ between two surfaces.
A) friction
B) magnetic force
C) mechanical advantage
D) output force
E) efficiency
  • 4. The ____________ work done by a machine can never be greater than the __________ done on the machine.
A) input work, output work
B) advantage, efficiency
C) fishing, hunting
D) output work, input work
E) efficiency, advantage
  • 5. When you remove a nail with a hammer the nail is remove by the _____________ .
A) output force
B) friction
C) input force
D) input advantage
E) output advantage
  • 6. Even though machines make work easier they _________________ the amout of work you need to do.
A) stop
B) don't decrease
C) do decrease
D) don't increase
E) change
  • 7. The force that you apply on a machine is the _______ .
A) input force
B) output force
C) mechanical advantage
D) applied advantage
E) MA
  • 8. The _____________ of a machine is the ratio of the output work to the input work.
A) opposing effort
B) total effort
C) raw rate
D) imprint of work
E) efficiency
  • 9. F out / F in equals _____ .
A) AM
B) FA
C) MA
D) EF
E) PA
  • 10. The force that the machine applies is ________ .
A) input force
B) mechanical advantage
C) applied advantage
D) output force
E) Input advantage
  • 11. W out / W in equals _____ .
A) eff
B) off
C) ma
D) ffa
E) human output
  • 12. The work that the machine does is the ________ .
A) input work
B) output advantage
C) human effort
D) output force
E) output work
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