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Understanding Hooke's Law: The Foundation of Elasticity| Chapter 5 Physics 9th

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...
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Momentum In Terms of Force | 9th Physics Chapter 3 Dynamics

 MOMENTUM IN TERMS OF FORCE                             (    Δp = Ft) Download PPT Lecture Download Now
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Force and Momentum + Problems 9th Physics chapter 3

 Force And Momentum Force:             Force is an agent which produce distortion in the body.          Force is a Vector Quantity. Unit of Force:                         The unit of force is newton .                         It is denoted by N. Newton: Newton is  the force required to produce 1m/s^2 acceleration in boy of mass 1kg. Momentum:                         The momentum is the product of mass and velocity.                         Mathematically, it can be written as,                                        p=mv p =>...
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 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...
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