Question

meaning of gravitational binding energy​

Answer 1

Answer:

The gravitational binding energy of a system is the minimum energy which must be added to it in order for the system to cease being in a gravitationally bound state. ... where G is the gravitational constant, M is the mass of the sphere, and R is its radius

Answer 2

Answer:

The gravitational binding energy of a system is the minimum energy which must be added to it in order for the system to cease being in a gravitationally bound state. A gravitationally bound system has a lower (i.e., more negative) gravitational potential energy than the sum of the energies of its parts when these are completely separated—this is what keeps the system aggregated in accordance with the minimum total potential energy principle.

Galaxy clusters are the largest known gravitationally bound structures in the universe.[1]

For a spherical body of uniform density, the gravitational binding energy U is given by the formula

where G is the gravitational constant, M is the mass of the sphere, and R is its radius.