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    How much do you know about Mechanical Aptitude?

    In an ideal lever (without friction), what magnitude must be balanced so that it does not rotate around the fulcrum?

    Answers

    The total potential energy
    The moments (torques) with respect to the fulcrumCorrect
    The masses on both sides
    The forces must always be equal.

    Rotational equilibrium requires zero sum of moments: F·d on one side equals F·d on the other (with opposite signs).

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