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The weight of an object varies directly with its distance from the center of the Earth when the object is below the Earth's surface, but is inversely proportional to the square of its distance from the center when it is above the surface(Note that an object is weightless only because its weight is exactly counterbalanced by the upward force due to its motion)

a)Phoebe's Small weighs 81 pounds at the Earth's surface. Write the particular equations expressing her weight as a function of distance form the cebter assuming the radius of the Earth is 4000 miles

b)Predict Phoebe's weight 3000,8000, and 12,000 miles from the center

c)Draw a graph of this function in the domain from 0 through 12,000 miles

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by mrambabu1600

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