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