Question

the binding energy of satellite revolving around planet in a cirular orbit is 3×10 power 9 J. It kinetic energy will be

Answer 1

Let mass of satellite is m and r is the radius of the circular orbit. satellite moves in circumference of circular orbit around the earth.

now, at equilibrium condition,

centripetal force = gravitational force

or,

or,

or, .......(1)

now , potential energy between satellite and the earth is given by

[ here negative sign indicates force acts between satellite and earth is attractive]

so,

or,

or,

or,

here negative sign indicates that the satellite is bound to the earth by attractive force and cannot leave it on its own. To move the satellite to infinity , we have to supply energy from outside to satellite - planet system.

so, binding energy of a satellite revolving in a circular orbit round the earth .

Answer 2

Answer:

3 X 10 raise to +9 J

Explanation: ok