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Calculus 1 Help: Solving Weight Formula for Distance
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[QUOTE="sharingan80, post: 4534574, member: 490850"] Okay I had a calculus test and we got it back and I got this question wrong. I tried it again but I can't figure it out. The weight, w, in kg of an object is inversely proportional to the square of the distance, r, in km, from the center of the earth. Assume a stone of the ground has weight 100 kg and that the diameter of the Earth is approximately 12,756 km. What is the formula of w in terms of r? I said w=k/r^2 but the question was multiple choice and I wasn't entirely sure so i chose the answer: w=(100*12756^2)/r^2 but the right answer was w= (25*12756^2)/r^2 [/QUOTE]
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Calculus 1 Help: Solving Weight Formula for Distance
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