High School Physics
IGCSE Physics Definitions from the Forces and Motion chapter are listed below. It contains definitions for vector, scalar, torque, CG, velocity, force, acceleration, and important laws like Newton’s laws of motion, Hooke’s law, etc. This post also includes reference links to detailed posts on respective topics that would certainly help the students of all boards […]
We will see here how to determine g in the laboratory. g is the symbol of acceleration due to gravity. The basic idea behind determining g in the laboratory is to drop a ball over a known distance and record the time of its descent. The challenge is that the descent happens very quickly. The […]
Here we will discuss the motion graphs of vertically falling objects when air-drag or air-resistance is present. Certainly, it’s not a free fall as during free-fall air drag is ignored and only gravity is considered. But in this case, we are discussing the vertical motion which is under the influence of both gravity and air-drag. […]
The stability of an object is related to the position of its center of gravity (CG). If the vertical through the CG passes through the base of an object, then it is stable, otherwise, it is unstable and topples down. Bodies with low CGs and wide bases are more stable. Examples showing the relationship between […]
This post covers how Collisions and Newton’s Laws of Motion are related. As collisions, we can take examples of the interaction between two bodies (gun-bullet, skater-skateboard, hose-water). For simplicity let us consider a simple collision between two balls and find out how Newton’s Laws of Motion can be applied to analyze the events related to […]
This post presents Numerical problems on Equilibrium. This physics worksheet will help students who are preparing for AP Physics, IIT JEE, and other competitive examinations to test their preparedness. This numerical set contains medium to hard problems from the equilibrium chapter. Numerical Problems on Equilibrium 1 ) A 50 kg uniform square sign, 2.0 m […]
Here is a numerical worksheet based on the Collision topic in physics that includes problems related to elastic and inelastic collisions.
Acceleration due to gravity of a body is independent of its mass – let’s show it mathematically. We will consider a body of mass m on the surface of the earth. Let M be the mass of the earth and R be the distance between the body and the centre of the earth (when the […]
In this post we will solve Numerical problems on Terminal Velocity. Here is the first set. Numerical problem on Terminal Velocity with solution 1 ) Find the terminal velocity of (a) a steel ball bearing of radius 1 mm and (b) a steel ball bearing of radius 2 mm falling through glycerine in a cylinder. […]
Here we will work on the derivation of the Terminal Velocity equation or formula using Stokes’ Law. We will consider a situation where a solid sphere moving slowly in a fluid to derive the Terminal Velocity equation. We will also solve a numerical problem using the terminal velocity equation. Derivation of Terminal Velocity Equation using […]
Stokes’ Law and its formula: Eminent physicist Sir Stokes investigated fluid dynamics and came up with an equation for the viscous drag (F) on a small sphere at low speeds. This formula is now called Stokes’ Law. The Stokes’ Law formula is represented in this way: F = 6 πrȠV ………… (1)where r is the […]
In this post, we’ll first discuss what the Centre of Gravity is. And then we’ll quickly list down where to find the centre of gravity in some regular objects easily. In simple words, the centre of gravity of a body is the point where the whole weight of the body can be considered to act. […]
Collisions are often classified according to whether the total kinetic energy changes during the collision and as per this classification collisions are of 2 types, Elastic collision, and Inelastic collision. Let’s find out their definitions, types, and examples. We will also solve a Sample Numerical problem based on collision. Define elastic and inelastic collisions An […]
We will first see what Pascal’s Principle or Pascal’s Law states. Then we will find out with formula and diagram how to apply Pascal’s Law to explain the operating principle of Hydraulic Car Lift or hydraulic jack. Pascal’s principle (or Pascal’s law) Pascal’s Law states that Any change in the pressure applied to a completely […]
Coulomb Force Strength versus Gravitational Force Strength – How Strong is the Electrostatic or Coulomb Force Relative to the Gravitational Force? To find this we will calculate the electrostatic force and the gravitational force between an electron and proton separated by 0.530×10-10 m. (This distance is their average separation in a hydrogen atom) This will […]
Often we hear these two terms as we discuss Work and Force in our physics class – conservative force and Non-conservative force. Here we will talk about these two and define them. Also, we will differentiate them and list examples for each of these forces for better understanding. So let’s start. Forces are either conservative […]
This post will tell you what FBD is, the definition and full form of FBD, and its purpose in physics and mechanics. Also, you will get a step-by-step guide on How to draw an FBD or Free Body Diagram while solving a problem in physics (mechanics). In physics, most problems are solved much more easily […]
Parachute motion under the influence of gravity and air drag (resistance) and the speed-time graph of this fall – This is the topic of this post. And we will cover this step by step. How does Parachute motion happen under gravity and air drag? 1) A free-fall parachutist jumps out of the aircraft and accelerates […]
In this post, we will discuss the concepts of the Banking Angle & Banked Curve. Then we will study the Banking angle formula and perform the derivation of the Angle of Banking formula. Banking Angle & Banked Curve So, let’s see what the banking angle is and why it is so important.When a car travels […]
In this post, we will focus on numerical problems based on inclined plane physics. We will list down the problems and solve them one by one. Numerical problems based on the inclined plane physics 1] A 5-kg mass, initially at rest, slides down a frictionless 30° incline. Calculate the force parallel to the incline and […]
Let’s Define the Inertial frame of reference and the Non-inertial frame of reference. A frame of reference can be any one of these two types: Inertial frame of reference & Non-inertial frame of reference Define the Inertial frame of reference & explain Inertial frame of reference—is that frame of reference in which Newton’s laws of […]
In this post, you will find a set of Pressure Numericals for class 9, where we have solved selected practice problems based on the Thrust and Pressure formula. As a reference, we have added the definition, formula, and SI unit of pressure.
In a fluid of constant density variation of pressure happens with depth. In this post, we will find out how pressure varies with depth in a fluid of constant density, and then derive the fluid pressure formula.
To understand the concepts of pressure in physics we will go through the following subtopics:
(1) definition of pressure in physics (2) formula of pressure in physics and (3) SI unit of pressure
In this post, we will discuss the forces acting on a mass sliding down an inclined plane. To do this we will take the help of the concepts of Vector Resolution. Here we are not considering the presence of friction. Forces acting on a mass sliding down an inclined plane The first step when setting […]
In this post, we will first define the term Relative Velocity, and then understand its necessity and importance to study the motion of an object. We will go through a case study with examples and then go deeper with the help of the Vector concepts. Relative Velocity definition of Relative Velocity Relative velocity: The velocity […]
In this post, we discuss the meaning and definition of inertia. Inertia is an important concept in the kinematics chapter of physics. Understanding it helps us to get an idea of the inertial frame of reference.We will also see how mass is related to inertia. And, finally, we will study one example to understand inertia. […]
This post is entirely focused on the Friction coefficient (also known as the coefficient of friction). We will define it and find out its types. Also, we will derive equations and get a list of values. Please note the symbol μ(mu) which denotes this coefficient. What is the friction coefficient? The Friction coefficient is a […]
This page presents a set of Force and Laws of Motion class 9 Numericals. We have used linear motion equations and force equations to solve these numerical problems.
Here in this tutorial we will study few pulley systems and solve some pulley tension problems as well.
Apparent weight of a moving car over a convex or concave bridge is the amount of Normal Reaction the car receives while traveling over the bridge. Here the system consists of the car, the bridge which is either convex or concave and the motion of the car along the curvature. So to start off we […]
In this post, we will State and Prove the Impulse Momentum Theorem with the derivation of the equation. As evident, this theorem or principle is related to impulse and momentum. Hence a prior knowledge of these two will help.Related study links are provided here: Read about Momentum and here you can read about Impulse as […]
Impulse Definition If a force acts on a body for a very brief time then we say that an impulse is generated. As example, when we hit a ball with a bat for a brief period of time then an impulse is generated. Here a considerable amount of force acts on a body for a […]
Elevator problems in physics with pseudo force – When an elevator is moving with an acceleration, it becomes a non-inertial frame of reference. We find it difficult to apply Newton’s laws of motion for a non-inertial frame of reference when the observer is a part of that reference. Here we will discuss the contribution of […]
Friction – Definition, Source, and Cause
Newton’s Second Law states that the rate of change of momentum of a body is directly proportional to the net force applied on it, and this change in momentum takes place in the direction of the applied force. Mathematically it can be stated this way: F∝ (mV-mU)/t. Here, F is the net force acting on the […]
Physics problems with pseudo force with solutions- these problems are going to be related to the noninertial frame of reference. Let’s solve an interesting numerical. A smooth inclined plane with an angle of inclination 30 o is moving with a constant acceleration a (as shown in the figure). When a block is placed on the […]
Application of newton’s laws: Newton’s laws of motion give us concepts of force (first law), measurement of force with its equation (second law), and the reaction of force (3rd law). Today we will discuss an interesting topic of mechanics – the application of Newton’s laws. It will cover a few interesting applications of Newton’s Laws […]
What is a pseudo force? – Some forces are real, whereas others are not. Real forces have some physical origin, such as a gravitational pull, frictional force, or tension of the string. In contrast, fictitious force or pseudo force arises simply because the observer is in an accelerating or non-inertial frame of reference, such as […]
A rigid body is said to be in mechanical equilibrium if both its linear momentum and angular momentum are not changing with time. In other words, the body is in mechanical equilibrium when it has neither linear acceleration nor angular acceleration. For a body of finite size to be in equilibrium:(i) the resultant force on […]
