were must be the pivot situated on a straight lever 2m long,if a downward effort of 200N at one end is to lift a mass of 50kg at the other end.state the distance from the effort.

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  1. the weight (force) of 50 kg is
    ... 50 kg * g
    ... g is the acceleration by gravity

    200 * d = 50 * g * (2 - d)

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