Forces - Keywords

Force is a fundamental concept in physics, defined as an interaction that causes movement. For example, moving a heavy object often requires a significant force. There are various types of forces, including push and pull. A push is a force that moves an object away from the source, such as pushing a car that remains stationary despite great effort. On the other hand, a pull draws an object towards the source of the force, as in the effort required to move an object.

Twist is another type of force where motion involves turning, like using a screwdriver to drive a screw into a wall. Forces can also be categorized based on whether they require direct contact between objects. Contact forces, like pressure, necessitate physical contact, whereas non-contact forces, such as magnetism, do not. Magnetism is an invisible force exhibited by materials like magnets, which can attract magnetic materials towards them or repel other magnets. Materials such as iron and steel are attracted to magnets, while neodymium is a strong magnetic element used in powerful magnets. Magnadur magnets are a specific type of magnet composed of Barium and Iron, with poles located on the top and bottom rather than the ends. Each magnet has two poles, typically referred to as the North and South Poles. Friction is the resistance force that occurs when two surfaces are in contact, and it can generate heat, as seen with car tyres on a road. The magnetic field represents the area under a magnet's influence, extending far beyond the magnet itself, such as the Earth's vast magnetic field.