Chapter 4 -Various types of Forces

OVERVIEW OF COURSE  (TO ACCESS FULL COURSE CONTENT, LOGIN-REGISTER and CLICK ON CURRICULUM)

1) Force and vector principle of Force. See Archimedes principle and Forces acting on a ball submerged inside water

2) Gravitational Forces of attraction, such as between any two Masses. Heavenly bodies in outer space- Earth and Sun, Moon and Earth.

Gravitational force is ALWAYS Attraction, NEVER repulsion

3) Electrostatic or Coulomb forces between electrically charged particles or bodies. This type of force has both Attraction and Repulsion

4) Electromagnetic Forces for a CLOSED SYSTEM having many charged particles inside the system

5) Main Difference between Electrostatic and Electromagnetic forces

6) Normal force and friction force. Frictional Force appears between 2 surfaces. It dissapears when there is no force causing relative motion

7) Rope Tension force. In Pulley systems, masses are fixed or hung using rope (or string) and you get this force.

8) What would happen if the whole world had comprised of ONLY NEUTRAL particles? 

9) Spring force . Special materials , like coil springs (and other types of springs) elongate and contract due to Force

10) Nuclear forces – act between Protons and Neutrons. It holds a Nucleus of an Atom together.

The other types of forces are also shown in 3D images and solid models .

Example: Hydrostatic forces acting on a body submerged in water, due to water column above the body

11) Difference between Classical physics and Quantum physics

12) THEORY EXAM – OBJECTIVE TYPE – SHUFFLED QUESTIONS – 15 MINUTES (for 12 questions)