PhysicsLAB Worksheet
Data Analysis #7

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Chart #7
Formula
y-axis
variable
x-axis
variable
solved
equation
slope

Kepler's 3rd Law
T2 r3 #1 #2
slope = 9.89 x 10-14
intercept = -2.31 x 106
r represents the satellite's orbital radius
T represents the satellite's orbital period
G = 6.67 x 10-11 Nm2/kg2
M represents the mass of the Earth
 
#1 

#2 



According to the slope of the line, what is the mass of the Earth? 

If the Earth's actual mass is recorded as 5.98 x 1024 kg, what is the accuracy of this data? 

Using the equation of the line for this data, interpolate the orbital radius of a satellite that takes one day, or 24 hours, to make one revolution around the Earth. 




 
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