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    Newton's Laws of Motion

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    An athlete whose mass is m is performing weight-lifting exercises. Starting from the rest position, he lifts, with constant acceleration, a barbell that weighs w. He lifts the barbell a distance of x in a time of t.

    Use Newton's laws to find the total force that his feet exert on the ground as he lifts the barbell.
    Take free fall acceleration to be g.

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    https://brainmass.com/physics/newtons-second-law/newtons-laws-motion-athlete-67120

    Solution Preview

    When the athlete is lifting the weight, the forces acting on the ground through his feet are :

    a) His own weight = mg
    b) ...

    Solution Summary

    This problem of an athlete lifting a barbell has been solved using Newton's second law to find the total force that his feet exert on the ground as he lifts the barbell.

    $2.49

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