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29 October, 05:26

Mr. Franklin uses a machine that has an efficiency of 80%. The machine applies a force of 800 N through a distance of 20 m. Mr. Franklin applies a force of 50 N on the machine. Through what distance does Mr. Franklin apply the force?

a. 4 m

b. 16 m

c. 260 m

d. 400 m

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Answers (1)
  1. 29 October, 05:45
    0
    Answer is d

    explanation:

    work done by the machine = F x d = 800 x 20 = 16000 J

    work done by mr. Franklin = W

    W x efficiency = 16000J

    W = 16000/0.8 = 20000 J

    distance travelled by Franklin = d_f

    W = 50N x d_f

    d_f = 20000/50 = 400
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Home » Physics » Mr. Franklin uses a machine that has an efficiency of 80%. The machine applies a force of 800 N through a distance of 20 m. Mr. Franklin applies a force of 50 N on the machine. Through what distance does Mr. Franklin apply the force? a. 4 m b.
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