Explore BrainMass
Share

Explore BrainMass

    General Physics: Work and Newton's third law

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    1. Nancy claims that she does more work in lifting her toddler each day than Atlas ever did when holding the whole world on his shoulders. is she correct?

    2. Given Newton's third law of motion, why is there no "equal and opposite reaction" when you jump into the air?

    © BrainMass Inc. brainmass.com October 10, 2019, 12:20 am ad1c9bdddf
    https://brainmass.com/physics/work/general-physics-work-newtons-third-law-287677

    Solution Preview

    Please see the attached for full solution.

    1. Nancy claims that she does more work in lifting her toddler each day than Atlas ever did when holding the whole world on his shoulders. is she correct?
    Yes she is correct
    In physics when we apply a force on a body and it get displaced we say we did work. Work done is directly proportional to the force applied and the displacement of the point of application of force in the direction of force. Thus if we apply a force F and the point at which force is acting is displaced by x in that direction then the work done W is mathematically given as
    W = F*x
    Thus the ...

    Solution Summary

    Two questions are answered to develop concepts of work and action reaction forces.

    $2.19