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17 August, 22:12

Can a machine be more than 100% efficient?

yes

no

impossible to determine

+2
Answers (2)
  1. 17 August, 22:36
    0
    No, simple machine will have an efficiency of 100% if he output work of the machine is equal to the work input.
  2. 17 August, 22:38
    0
    Impossible to determine

    Explanation:

    In other words, no machine can be more than 100% efficient. Machines cannot multiply energy or work input ... If a machine were 100% efficient then it can't have any energy losses to friction, so no friction can be present. In that case the theoretical and actual mechanical advantages would be equal.
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