- Created by: April_Higgin
- Created on: 02-01-15 19:42
Fields: A field is a region in space where forces are exerted on objects with certain properties.
Gravity is a vector field.
A uniform field has the same magnitude and direction everywhere in the field. (e.g., the surface of the Earth)
A radial field has varying magnitude and the direction is always to the centre of the object. The magnitude decreases as the distance from the object increases. (The Earth)
Properties of a gravitational field:
Direction: the direction of the force felt by a test mass placed in the field.
Magnitude: The force per unit mass.
Gravitational field strength: g = F/m (units N/Kg)
Newton's law of gravitation:
The force of attraction…