Take the differential of this equation for g to obtain an approximate algebraic expression for Δg, the change in g, for a small change Δr in height." How do I sovle this question?

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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I am currently working through a physics book (Spacetime Physics by Edwin Taylor) and I have come across this question and I don't know how to solve it:

"Take the differential of this equation for g to obtain an approximate algebraic expression for Δg, the change in g, for a small change Δr in height."

How do I sovle this question? 

Demonstrate this 2-millimeter increase in separation.
The following outline may be useful. Take the gravi-
tational acceleration at the surface of Earth to be go
9.8 meters/second² and the radius of Earth to be r
6.37 X 106 meters. More generally, the gravitational
acceleration g of a particle of mass m a distance r from
the center of Earth (mass M) is given by the expression
8
F
m
GM
p²
70/2
GM2
p² p2
8010
p²
Transcribed Image Text:Demonstrate this 2-millimeter increase in separation. The following outline may be useful. Take the gravi- tational acceleration at the surface of Earth to be go 9.8 meters/second² and the radius of Earth to be r 6.37 X 106 meters. More generally, the gravitational acceleration g of a particle of mass m a distance r from the center of Earth (mass M) is given by the expression 8 F m GM p² 70/2 GM2 p² p2 8010 p²
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