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A screwdriver moves 16cm with 20 N of applied force to pry the lid from a paint can. What efficiency is obtained if the screwdriver produces 288 N and moves the lid 1 cm?

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  1. 8 August, 02:07
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    Number of centimeters that the screwdriver should move with 288 N is:

    288 (16/20) = 230.4

    So, we have: If 230.4 is your 100%, then what percentage is 1 centimeter

    (1/230) = 0.00434

    If you multiply it by 100, you get:

    0.00434x100 = 0.43%

    What efficiency is obtained if the screwdriver produces 288 N and moves the lid 1 cm?

    The efficiency is 0.43%
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