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HOMEWORK #1
Due: 3
rd
– 9
th
Sept 2008
4. EXCEL Problems
(adapted from problems 2.10 and
2.11 (pg 52) of textbook)
Newton’s law of gravitation tells us that the force exerted by one particle on another is:
with the following quantities defined as:
G
 universal gravitational constant is given as G = 6.673 x 10
11
Nm
2
/kg
2
m
1
, m
2

mass of each particle respectively
r

distance between the 2 particles
Using EXCEL, calculate a table of gravitational forces between the earth (mass = 6 x 10
24
Kg) and the moon (mass = 7.4 x 10
22
Kg) for 10 equally spaced distances from 3.8 x 10
8
m to
4.0 x 10
8
m.
a.
Download the probtemplate.xlsx file from blackboard.
b.
Under the Input Section, assign G, m
1
, and m
2
to cells A7 through A10 (labels and units)
and B7 through B10 (values).
c.
Under the Calculation Section, assign the distance values to cells D7 through D18
(include a heading with units).
Calculate the forces for the range of distances in cells E7
through D18 (include a heading with units) using cell addressing.
d.
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This note was uploaded on 02/12/2012 for the course ENGR 126 taught by Professor Oakes during the Fall '08 term at Purdue University.
 Fall '08
 Oakes

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