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Force of Friction
Force of Friction - According to Newton's first law of motion every body continues to be in its state of rest or uniform motion along a straight line unless an external force acts on it. This means that a ball moving on a horizontal surface should continue to..
Forces Summary
Summary - Force produces or prevents motion of a body. Friction is a force that opposes motion. Moment is defined as the turning effect of a force about a pivot or fulcrum. The centre of gravity of a body is a point where the whole weight of the body see..
Force and Inertia
An interaction which causes an acceleration is called a force. Only when we push a ball does it begin to move. A ball lying on a horizontal floor doesn't start to move all by itself. For that matter, take a parked a car on a horizontal road. Only when we activate the engine and engage the..
Force of Gravitation
Force of Gravitation - Drop a stone from a height. What do you observe? The stone which was initially at rest starts moving towards the ground and attains a maximum speed just before it touches the ground. The stone is not moving with uniform speed. Its speed keeps changing at every insta..
Force of Gravitation
Force of Gravitation - What do you observe when you drop a stone from a height? The stone which was initially at rest starts moving towards the ground and attains a maximum speed just before it touches the ground. Is the stone moving with a constant speed? No, it is not moving with unifor..
Variation of frictional force with applied force
Imagine the following situation. A heavy crate is resting on the floor in a warehouse. You push it horizontally with a steady force, but it does not move. That is because the force that you apply is balanced by a frictional force exerted horizontally on the bottom of t..
Imagine the following situation. A heavy crate is resting on the floor in a warehouse. You push it horizontally with a steady force, but it does not move. That is because the force that you apply is balanced by a frictional force exerted horizontally on the bottom of t..Work, Energy and Power Summary
Summary - The essential conditions to be satisfied for work to be done are: Some force must act on the object. The point of application of force must move in the direction of force. W = F x s SI unit of work is joule. Energy is the capacity to do work. The tw..
Summary - The essential conditions to be satisfied for work to be done are: Some force must act on the object. The point of application of force must move in the direction of force. W = F x s SI unit of work is joule. Energy is the capacity to do work. The tw..Heat and Motion (Kinetic Theory of Heat)
Under normal conditions matter exists in three forms: solid liquid gas Matter is made up of atoms and molecules. These atoms in molecules are in a state of continuous motion. For example, molecules and atoms of a solid can have only vibrational motion, because they are held in t..
Laws of Motion
Whenever we push or pull an object, we do so by means of a force. Force is an interaction between two bodies which causes acceleration, or simply, motion..
Motion Introduction
Introduction - In the physical world, one of the most common phenomena is motion. The branch of Physics, which deals with the behaviour of moving objects, is known as mechanics. Mechanics is further divided into two sections namely Kinematics and Dynamics. Kinematics deals with the study ..
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