3)
In order to find the radius of the Earth as a slightly flattened ellipsoid we will use the
formula
1f sin 2 ()
Rs =R E
(1)
Were Rs=radius of surface
RE=6378.137km (equatorial radius)
1
f= 298.252
and
(flattening parameter)
=latitude
To visualize the r

Homework 11
Daabid Schellenberg
1. The centripetal acceleration is the rate of change of tangential velocity and is always inwards along the
radius vector of the circular motion. The centrifugal acceleration is inertia of motion.
2. The Earth's gravity is

We are given a spherically symmetrical shell with an outer radius, a, and inner radius, b. We are
going to derive the equations of gravitational potential and acceleration outside of the shell,
within the shell, beneath the shell.
Outside Shell (G.P.)
We