Physics, 28.06.2020 22:01 askharoun2005
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
work
Answers: 2
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Which of the following examples describes mechanical efficiency?
A. greasing a surface helps reduce...
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