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  1. Efficiency Worksheets, Questions and Revision | MME

    Efficiency tells us how much energy is transferred to useful energy and how much energy is wasted. By reducing wasted energy, the efficiency of an energy transfer can be increased. This will save energy and money.

  2. Mechanical Advantage and Efficiency Practice …

    Efficiency Worksheet - Free download as PDF File (.pdf), Text File (.txt) or read online for free. 1. The efficiency of the lever is 80% as it did 20 J of work out of the 25 J input. 2. The input mechanical advantage (IMA) of the lever is 0.5 as …

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