## How much energy does it take to launch a satellite?

This means that, even though it takes nearly a million joules of energy to lift a 1 kg mass to an altitude of 100 km, it takes over 30 million joules of extra energy to give it enough speed to stay in orbit around the Earth.

What happens to the total energy of satellite?

The total energy of a circularly orbiting satellite is thus negative, with the potential energy being negative but twice is the magnitude of the positive kinetic energy.

### Is the total energy of a satellite constant?

Like the case of circular motion, the total amount of mechanical energy of a satellite in elliptical motion also remains constant. Since the only force doing work upon the satellite is an internal (conservative) force, the Wext term is zero and mechanical energy is conserved.

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How much energy is required to maintain a satellite in its orbit?

No energy is required by a satellite to keep it orbiting. This is because the work done by the centripetal force is zero.

## What is minimum energy required?

The principle of minimum energy is essentially a restatement of the second law of thermodynamics. It states that for a closed system, with constant external parameters and entropy, the internal energy will decrease and approach a minimum value at equilibrium.

Why is the total energy of a satellite negative?

Ep = – GMm/r. Ep is always negative because gravitational forces are attractive and Ep=0 when the satellite is at an infinite distance away from the planet. The total energy of the satellite is hence negative, which means that the satellite will never be able to escape from the gravitational pull of the planet.

### What is total energy?

Total Energy is the total final energy consumption at a specific branch/variable. Total energy is distinguishable from Final Energy Intensity by the fact that energy data is entered directly: that is it is not specified as the product of an activity level and an energy intensity.

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What can be the total energy of a satellite revolving around some planet?

The binding energy of a satellite revolving around planet in a circular orbit is 3 × 10^9J .

## Why the total energy of the satellite is always negative?

What is the total energy of satellite revolving around the Earth?

The total energy of a satellite is just the sum of its gravitational potential and kinetic energies. Assuming that mechanical energy is conserved (which it is for the most part in the vacuum of space), the sum of the kinetic and potential energies of the satellite would remain constant.