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  1. J

    Power concept related to gravity, constant speed, and air resistance

    Thank you tiny-tim! Where in the question stem do you infer applied power, though?
  2. J

    Power concept related to gravity, constant speed, and air resistance

    Homework Statement An object weighting 100N is traveling vertically upward from the earth in the absence of air resistance at a constant velocity of 5 m/s. What is the power required to keep the object in motion? Homework Equations P = ΔE/t and P = Fvcosθ The Attempt at a Solution...
  3. J

    Spring Constant and Deformation

    Yeah, that spring constant cut in half is in my 1001 EK book. Basically, mechanically, to answer your question: k1x = k2x/2 => 2k1 = k2.
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