Tag
Gravity
Entries tagged gravity.
3 entries
Concept
Potential energy and configuration
Potential energy is the work a configuration of interacting objects could still do, stored not in one object but in the relationship between them and a reference.
6 min
ConceptUniversal gravitation
Every two masses in the universe pull on each other with a force that grows with both masses and falls off as the square of the distance between them, the same law that governs a falling apple and a moon in orbit.
8 min
ConceptWeight and gravitational interaction
Weight is not a property an object owns; it is the specific gravitational force pulling on it right now, which is why the same object weighs differently on the Moon, in an accelerating elevator, and in orbit, while its mass never changes at all.
7 min