Satellites orbiting the earth have finite life and sometimes debris of satellites fall to the earth. This is because

Satellites orbiting the earth have finite life and sometimes debris of

1.	Satellites orbiting the earth have finite life and sometimes debris of satellites fall to the earth. This is because
Answer» the solar cells and batteries in satellites run out the laws of gravitation PREDICT a TRAJECTORY spiralling inwards of viscous forces CAUSING the speed of satellite and HENCE height to gradually decrease of collisions with other satellites Solution :The total energy of the earth satellite is negative as it is bounded. Due to the viscous force acting on satellite, energy DECREASES continuously and radius of the orbit or height decreases gradually.