Question
The gravitational potential due to some distribution of mass is given by 
Find the gravitational field due to that distribution of mass.
Solution
Gravitational field is given by, ![<pre>uncaught exception: <b>mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied</b><br /><br />in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56<br />#0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array)
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Gravitational P.E is given by, 
We know that field the negative gradient of gravitational potential energy.
∴ 
This is the required expression for gravitational field due to the distribution of mass.
