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