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Math Help - spring problem

  1. #1
    Junior Member
    Joined
    Jun 2010
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    spring problem

    So i have this problem that ive come across,

    A mass weighing 16 pounds is attached to a spring whose constant is 8 lb/ft. The medium offers a damping force that is numerically equal to 4 times the instantaneous velocity. The mass is initially released from a point 2 feet above the equilibrium position with a downward velocity of 1 ft/s. Determine the equation of motion.

    in studying for my midterm. I can't figure it out for the life of me. I dont even know where to start. I could really use some guidance please.
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  2. #2
    A Plied Mathematician
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    Re: spring problem

    First step: draw a picture and label relevant quantities. What are the forces on the mass? Then apply Newton's Second Law. What do you get?
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