Instantaneous velocity “If a body covers small displacement in in small interval of time than its velocity will be instantaneous velocity such that Δt is equal to zero.”Where Δt is the small interval of time.Average velocity does not tell us about the motion between two points on the path.The path may be straight or curved and the motion may be steady or ...

Read More »## What is difference between angular and tangential velocity?

Angular velocity “Time rate of change of angular displacement is known as angular velocity.”It is denoted by ω,its formula is given by: Unit of angular velocity is radian per second (rad s-1) . Very often we are interested in knowing how fast or how slow a body is rotating.It is determined by its angular velocity which is defined as the rate ...

Read More »## Relation between escape velocity and orbital velocity formula

What is Escape velocity ? “The velocity required by a body to escape from the earth’s gravitational field.”It is our daily life experience that an object projected upward comes back to the ground after rising to a certain height.This is due to the force of gravity acting downward.With increased initial velocity,the object rises to the greater height before coming back.If ...

Read More »## law of conservation of momentum formula & examples in real life

Guess now! Why the passengers in the bus move forward when the bus stops quickly? What happens when two bodies strike with each other? Why gun recoils back after firing? Do you want to learn this types of questions then? Let start: Law of conservation of momentum definition According to this law:”The momentum of an isolated system of two or ...

Read More »## Difference between stable unstable and neutral equilibrium with examples

Types of equilibrium in physics There are three states or types of equilibrium in physics Stable equilibrium Unstable equilibrium Neutral equilibrium Stable equilibrium “A body is said to be in stable equilibrium if after a slight tilt it returns to its previous position.” Consider a book lying on the table.Tilt the book slightly about its one edge by lifting it ...

Read More »## difference between centre of mass and centre of gravity with examples

Centre of Mass “Centre of mass of a system is such a point where an applied force causes the system to move without rotation” It is observed that the centre of mass of a system moves as if its entire mass is confined at that point. A force applied at such a point in the body does not produce any ...

Read More »## Newton’s third law of motion examples in daily life

Newton’s first law of motion Newton’s second law of motion Newton’s 3rd law of motion explains the quantitatively that how forces affect motion.But question is that where these forces come from?We noticed during observations that a force on any object always exerted by another object. For examples: A horse pulls a cart ,a person walks on the ground, hammer pushes ...

Read More »## Newton’s second law definition and formula

Newton’s first law of motion Newton’s second law of motion Newton’s Third law of motion According to newton’s first law of motion “if no net force is acting on a body at rest,then the body remains at rest,or if the body is moving will continue to move.” But! What will happen if net force is act on a body? Newton ...

Read More »## Potential energy formula with examples in everyday life

Energy due to position is called potential energy. It is represented as P.E.It is a scalar quantity.Its unit is joule.P.E is the type of mechanical energy,which is define as:Energy due to motion and position. Now! Before we discuss the explanation of P.E,we give some mechanical energy examples. Examples of mechanical energy Moving wind when it turns windmill Aeroplane moving in ...

Read More »## Gravitational field strength:formula & definition

Gravitation Newton’s law of gravitation Mass of earth What is Gravitational field? “The space around the earth in which earth can exert a force of attraction on other bodies is called gravitational field.”A basic fact of the gravitation is that to particles exerts forces on one another.This is a direct interaction between the two particles and is called action at ...

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