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February 1, 2015

February 1, 2015

Posted by **cassie** on Thursday, October 11, 2007 at 11:55pm.

a)find dF/dr and explain its meaning. What does te minue sign mean?

b)suppose it is known that the earth attracts an object with a force that decreases at a rate 2N/km when r=20,000km?

- calculus -
**bobpursley**, Friday, October 12, 2007 at 5:40amDo you proof your typing? You should. Part b) makes no sense

Part a) requires some thinking. What is a gradient? What happens when one is going in the negative direction?

I will be happy to critique your thinking on this.

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