Gravitational Field Strength - GCSE Physics Definition

Gravitational field strength is a measure of how strong the force of gravity is at a particular location. It tells us how much force gravity would exert on a 1 kilogram object in a specific place. The unit of measurement for gravitational field strength is newtons per kilogram (N/kg). On Earth, the gravitational field strength is approximately 9.8 N/kg, which means that each kilogram of mass is pulled downwards with a force of 9.8 newtons. This concept helps us understand how gravity works differently on other planets and is crucial for calculating the weight of objects.