# Physics

### Archimedes’ Principle

When a stone is immersed in a bucket completely filled with water, some amount of water spill out of the bucket. The weight of water …

### Bragg’s Law

Bragg’s law was first proposed by Sir William Bragg and his son Sir Lawrence Bragg. They studied about the diffraction of X-rays and devised a …

### Center of Gravity Definition, Equation and Calculation

The center of gravity (not to be confused with center of mass) of a body is a point where the weight of the body acts …

### Center of Mass

The center of mass (not to be confused with center to gravity) of a body is the point which behaves as if all the mass …

### Angular Momentum and Principle of Conservation of Angular Momentum

The moment of linear momentum of an object is called angular momentum. Angular momentum is represented by L. The angular momentum of an object about …

Radius of gyration is defined as the distance from the axis of rotation to a point where the total mass of the body is supposed …

### Velocity of Sound in Gas (Newton’s formula)

According to Newton, when sound waves propagate in air, compression and rarefaction are formed. He assumed that the process is very slow and the heat …

### Velocity of Light Michelsons’s Method

Michelsons’s Method is a precise method for measuring the speed of light. An octagonal mirror M1 is mounted on the shaft of a variable speed …

### Escape Velocity, it’s Formula and Derivation

When an object is thrown vertically upwards, it reaches a certain height and comes back to the earth. But when it is given greater initial …

### Law of Conservation of Energy and Potential to Kinetic Energy Conversion

According to law of conservation of energy, Energy of an isolated system is constant. It can neither be created nor be destroyed but it …

### Measurement and Measurement Units in Physics

Measurement is a process of detecting an unknown physical quantity by using standard quantity. For example: Take a book and use ruler (scale) to find …

### Dimensional Equations and Formulas of Physical Quantities

The dimension of a physical quantity is defined as the power to which the fundamental quantities are raised to express the physical quantity. The dimension …

### Newton’s Laws of Motion

Newton studied about motion scientifically and concluded some results which are called Newton’s laws of motion. There are three laws of motion. All three laws …

### Linear Momentum and Principle of Conservation of Momentum

Linear Momentum Momentum is the motion contained in a body. Quantity of motion possessed by a body depends upon both of its mass and velocity. …

### Friction, Types of Friction & Co-efficient of Friction

What is Friction?

### Kinetic Energy and Work-Energy Theorem

Kinetic Energy The energy possessed by a body due to its motion is called kinetic energy. So from the definition, it is known that kinetic …