Which of the following examples describes mechanical efficiency? A. greasing a surface helps reduce friction OB. a longer lever

Question

Which of the following examples describes mechanical efficiency?
A. greasing a surface helps reduce friction
OB. a longer lever helps lift more weight
O C. a fixed pulley changes the direction you
pull
D. pushing the object down a slope is less
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Delwyn 3 years 2021-08-24T22:02:01+00:00 2 Answers 7 views 0

Answers ( )

  1. huyenthanh
    0
    2021-08-24T22:03:35+00:00
    Reply

    Answer:

    Hello

    I think the first one is correct.

    Explanation:

  2. Nem
    0
    2021-08-24T22:03:58+00:00
    Reply

    A……………is the answer

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