Resultant gravitational field strength, also known as net gravitational field strength, is the sum of all gravitational forces acting on an object due to multiple masses.
The resultant gravitational field strength is calculated by using the formula F = G(m1m2)/r^2, where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the objects, and r is the distance between them.
The resultant gravitational field strength is affected by the masses of the objects and the distance between them. The stronger the masses and the closer they are, the greater the resultant gravitational field strength.
The SI unit for resultant gravitational field strength is Newtons per kilogram (N/kg). However, it can also be measured in other units such as meters per second squared (m/s^2) or dynes per gram (dyn/g).
The resultant gravitational field strength plays a crucial role in the motion of objects. Objects will accelerate towards each other in the direction of the resultant gravitational field strength. This acceleration is known as gravity, and it is what keeps planets in orbit around the sun and objects on Earth's surface.