Category: Physics

First Law of Motion: Qualitative aspect of force Newton’s first law of motion states that, ” A body acted acted on by no net force has a constant velocity (which may be zero) and zero acceleration.” From the statement we conclude that to change the state of rest or motion, an external agent is required…

Conservative Forces Forces that are path-independent are considered as conservative forces. Non-conservative Forces Force that are path-dependent are considered as non-conservative forces.

Power of a body is defined as the rate of doing work. Its SI unit is Watt (W).

Introduction The energy possesed by a body due to its configuration or motion is said to be mechanical energy. It can be categorized into Kinetic Energy and Potential Energy. In other words, the total mechanical energy of a body is the sum of its kinetic energy and potential energy. When a body has the least…

Statement: The net work done on a body is equal to the change in kinetic energy of that body. $\text{Work done (W) = Force (F) . Displacement (s)}$ And $\text{Force (F) = mass (m) . acceleration (a)}$ So $\text{W = mas}$ We know, $\text{v}^2 \text{ = u}^2 \text{ + 2as}$ $\implies \text{as} = \dfrac{\text{v}^2 –…

Define the term Linear Momentum, SI units and Dimensions State the principle of conservation of linear momentum and derive an expression for it Introduction Linear momentum is defined as the product of mass and velocity and is denoted by P. Mathematically,$$\text{P = mv}$$where ‘m’ is the mass of the body and ‘v’ is its velocity.…

Define the term inertia Relate Inertia and Newton’s first law of motion Define inertia of rest, inertia of motion and inertia of direction Introduction Inertia is defined as the inability of a body to change its state of rest or motion; or direction by itself. When a body continues to do some work, then it…