Tracy pushes a block up an inclined plane to a height of 1.0 m. If Tracy puts 475 J of work into the system, but only 450 J are used t

Question

Tracy pushes a block up an inclined plane to a height of 1.0 m.
If Tracy puts 475 J of work into the system, but only 450 J are used to elevate the block, what is the efficiency of the inclined plane?
A. 95%
B. 106%
c. 925)
OD 25 J

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Lệ Thu 3 years 2021-07-30T04:33:34+00:00 1 Answers 6 views 0

Answers ( )

  1. thanhha
    0
    2021-07-30T04:34:49+00:00
    Reply

    A=95%

    (450/475)*100=94.7% which rounds to 95%

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