Posted by **Sam** on Thursday, March 24, 2011 at 5:22pm.

Can someone please help me with the following question.

1) The weight of an object above Earth can be modeled by a function of the form w(h)=(r/r+h)^2*"w , where r is the radius of Earth

0"

(approximately 3950 miles)," h" is the distance above Earth's surface, and

"w is the weight of the object on the surface of the Earth.

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a) At what height will a 150-pound object weigh 50 pounds?

I used the following:"w = 150 w(h)= 50 r=3950

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So I plugged these values into the equation given:

50=(3950/3950 + h)^2*150

and my answer was h= 7900

b) How high would a crow carrying a whelk haveto fly for the whelk's weight to change by 0.1%?

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