HOOKE'S LAW Introduction In physics, Hooke's Law is one of the fundamental principles governing how objects deform under external forces . Named after the 17th-century British physicist Robert Hooke, this law provides a crucial understanding of the behavior of elastic materials, such as springs and rubber bands. Whether stretching a rubber band or compressing a spring, Hooke's Law helps explain what happens when forces act on these materials. What is Hooke's Law: Hooke's Law states that the force F needed to extend or compress a spring by some distance x is proportional to that distance. Mathematically, it is expressed as: F= -kx Here k represents the spring constant, which is the measure of the stiffness of the spring, and x is the displacement from the displacement position. The negative sign indicates that the force exerted by the spring is in the opposite direction of the displacement. Understanding the Spring Constant: The spring constant k is a critical co...
KINEMATICS Mechanics is the branch of Physics, which deals with the study of motion of objects with or without the reference of force. It is divided into two branches: 1. Kinematics 2. Dynamics Kinematics deals with the motion of objects without the reference of the force. Such as: Motion of free fall body. Motion of a car on straight line. Dynamics on the other hand is the study of the motion of objects, with the reference of force. Such as: Motion of cars (Here we basically talk about the forces acting on an engine) Throwing of an object (When we through an object the force acted/ applied by the muscle being discussed here.) REST AND MOTION A body is said to be in the state of rest, if it does not change its position with respect to its surroundings. For Example: When you are sitting in a bus and the bus is moving but you are not changing your position with res...