Question 387484
The weight of an object varies inversely as the square of its distance from the center of the planet it is on. If a person weighs 180 pounds on a planet's surface, what is his weight 340 miles above the surface of the planet? The planet's radius is 5000 miles. 
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w = k/d^2
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Find "k" using the following:
If a person weighs 180 pounds on a planet's surface,  The planet's radius is 5000 miles.
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180 = k/(5000)^2
k = 180*5000^2
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Equation for this problem:
wt. = (180*5000^2/d^2
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what is his weight 340 miles above the surface of the planet?
Solve: 
wt = (180*5000^2)/(5340)^2
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wt = 157.81 lbs.
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Cheers,
Stan H.
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