Dynamics: Pressure and Forces

This lecture covers the dynamics of objects under external forces, focusing on the example of a cart propelled by a ball. It explains the application of Newton's laws to analyze the motion of the system, considering forces like weight and support. The lecture then delves into the concept of pressure, discussing how forces are distributed on an object's surface and defining pressure as a scalar quantity. It concludes by exploring the relationship between force distribution and pressure, using the example of air pressure due to molecular collisions. Various units of pressure are also introduced, such as pascal and bar.