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...
Friction Before discussing what is Friction? Lets consider a scenario, suppose you are continuously paddling a bicycle, but when you stop paddling the cycles got stopped after covering some distance. Do you know why is that so? Naturally there must be some force that stops the moving objects. The Force not only helps the objects to move it also stops the moving objects. On the other hand, suppose you kick a ball after covering a distance it got stopped. Why it got stopped? In both the cases two forces acting on both the bodies parallelly. One is Normal force (R) which is applied by you to move the object, and another is limiting force (Fs) which acts in opposite direction to stop the moving object. As we can observe in above figure, when a car is moving there are two forces acting on it. 1. R which is Normal Force applied by engine of the car. 2. Fs which is Limiting force it is frictional force which is opposing the normal force. Definition of Friction: ...