Gravity
Summary: Gravity is a non-contact force pulling masses toward each other. Tags: concepts physics forces Created: 2026-04-22 13:10:06Z Last Updated: 2026-04-22 13:10:06Z
Content
Gravity acts between all objects with mass. Near Earth, gravitational field strength is about 10 N/kg, so weight can be estimated by:
weight (N) = mass (kg) × gravitational field strength (N/kg)
Gravity explains falling objects, orbital motion, and why weight changes on different celestial bodies even when mass stays constant.