Types of Forces - JSS2 Basic technology Lesson Note

Forces are pushes or pulls that can cause objects to move, change direction, or alter their shape. There are several types of forces, each with distinct characteristics:

1. Gravitational Force: This is the force of attraction between two masses. It pulls objects towards the centre of the Earth, which is why we stay grounded. Gravity is responsible for the falling of objects and the orbiting of planets.
2. Frictional Force: This force opposes the motion of objects sliding past each other. It acts parallel to the surfaces in contact and can either be static (preventing motion) or kinetic (resisting motion).
3. Magnetic Force: This is the force exerted by magnets and magnetic materials. It can either attract or repel objects, depending on the polarity of the magnetic poles involved.
4. Electrostatic Force: This force occurs between charged particles. Like charges repel each other, while opposite charges attract.
5. Tensional Force: This is the force that is transmitted through a string, rope, or wire when it is pulled tight by forces acting from opposite ends.
6.  Normal Force: This force acts perpendicular to the surface of contact, supporting the weight of objects resting on a surface.