Forces in Physics

This lecture covers the concept of forces in physics, starting with special forces like gravitational force, which acts at a distance between masses. The gravitational force near Earth's surface is discussed, defining weight as the force of gravity on an object. The equivalence between weight and mass is explained, along with the acceleration due to gravity. The lecture also explores the Galileo's experiment on free fall, comparing the acceleration of objects in vacuum and air. Additionally, it delves into contact forces, such as tension, support, and friction, highlighting their transmission through direct contact with objects.