# Gravity Funny satellite

**Classical Mechanics**Level 2

A Geo-stationary satellite is Orbiting around the Earth at a height of 30,000 km in a circular orbit. The radius of the Earth is taken as 6,000 km.

The Geo-stationary satellite comes back to its position after one revolution in exactly 24 hours.

Let the mass of the satellite be 1000 kg. Calculate the work done 12 hours when moving under gravitational force. \[(NTSE 2012-2013)\]

DETAILS AND ASSUMPTIONS:

1) Take the acceleration due to gravity as \[ g = 9.798 \frac{m}{s^2}\]

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