What Makes Binding Energy Negative? Examples and Explanations

[drywater123]

What is binding energy? Give two examples.
Most forms of energy are positive. Why is binding energy negative?

 

[Astronuc]

What is binding energy? Give two examples.
Most forms of energy are positive. Why is binding energy negative?

What has one tried with respect to finding information on binding energy? Ostensibly one has a textbook in which binding energy is described.

Meanwhile - try Hyperphysics
http://hyperphysics.phy-astr.gsu.edu/hbase/nucene/nucbin.html