High School Physics
In this post, we will discuss three types of pulleys, and how they operate, and how they differ in their operation and utilities. The types we will discuss are (1) Fixed Pulleys, (2) Movable Pulleys, (3) the Block and Tackle.
In this post, we will study a few examples of Inelastic collisions. Also, we will study an important practical use of Inelastic collisions.
In this post, we will briefly mention the equations valid for elastic collisions. We can use these equations to solve numerical problems related to elastic collisions. The Equation for the conservation of momentum (for elastic collision) Now, to solve problems involving one-dimensional elastic collisions between two objects, we can use the equation for the conservation […]
An explosion can be thought of as a single object separating into two or more fragments. In this post, we will see if the law of conservation of momentum is maintained during an explosion. We will solve related numerical problems as well. Some familiar examples of explosions are: a bomb blowing into fragments a bullet […]
The position of the center of mass of a body affects whether or not it topples over easily. This is important in the design of such things as tall vehicles (which tend to overturn when rounding a corner), racing cars, reading lamps, and even drinking glasses. A body topples when the vertical line through its […]
In this post, we will see how to find the centre of mass using a plumb line. Suppose we have to find the centre of mass of an irregularly shaped lamina (a thin sheet) of cardboard. Steps to follow to locate the centre of mass of an irregularly shaped lamina (a thin sheet) of cardboard […]
The image below shows a list of equations and formulae from the chapter “Forces” of the GCSE Physics syllabus. This is also helpful for all other equivalent boards like CBSE, ISC, ICSE. Equations to learn from the ‘Forces’ chapter Get the equations of weight, work done, spring force, the moment of force, pressure, distance traveled, […]
In this post, we will analyze one Atwood machine when its pulley has a non-zero mass. As a result this pulley has a nonzero moment of inertia. when pulley has a non-zero mass and nonzero moment of inertia We will discuss the operation of an Atwood machine with a pulley that has a non-zero mass […]
In this post, we will discuss the Center of Mass and its Momentum & velocity. Center of mass – for a single object & for collection of masses The center of mass (CM) is closely related to the concept of momentum. In most of the discussions and numerical problems, we assume that the various objects […]
This post presents a Force & Laws of Motion class 9 Worksheet for high school students. This worksheet with multiple choice questions is based on the chapters (a) Laws of Motion & (b) Force of different types. This is useful for Class 9,10, and 11 students of different boards like CBSE, ICSE, IGCSE, etc. Force […]
In this post, we will derive the equation of centripetal acceleration using trigonometry. In a different post, we have done the derivation of the equation of centripetal acceleration using differential calculus. How to derive the equation of Centripetal acceleration (using trigonometry) In the above figure (figure 1), a particle is moving in a circle with […]
We need to reduce or increase friction in different situations, depending on our requirements and benefits. Here, in this post, we will list down some efficient ways to reduce friction. Not only that, but we will also come up with some intelligent ways to increase friction as well to make our life better. Ways to […]
A lot of problems we discuss involve ropes and strings. Most of the time, we assume that they are massless, or more precisely, that the mass of a string is much smaller than the other masses in the problem. As you know from everyday life, if you grab a weight by a string, you feel […]
In this post, we will see how Newton’s third law can be derived from the equation of conservation of momentum. Derive Newton’s third law from the equation of conservation of linear momentum Say, a body of mass m1 with velocity u1 collides with another body of mass m2 with velocity u2. After the collision, say, […]
In this post, we will discuss 8 common forces we find in Physics. For every such force type, we will find out the cause or reason or source of the force and also will site a few examples. The common forces we include are (1) weight, (2) Normal contact or normal force, (3) Friction, (4) […]
In this post, we will cover a bunch of questions and equations from the Uniform Circular Motion chapter. When a particle moves in a circle with constant speed, the motion is called uniform circular motion. Examples of uniform circular motion: A car rounding a curve with a constant radius at a constant speed, a satellite […]
Let’s discuss the application of forces to change the shape of an object and the concept of elasticity related to this shape change. We will cover the stretching of spring as a case study. If one force only is applied to an object then the object will change speed or direction. If we want to […]
In this post, we will derive formulas of centripetal acceleration & centripetal force while we discuss the uniform circular motion. Uniform circular motion & its acceleration An object moving with uniform circular motion moves along a circular path of fixed radius at a constant speed. Since the direction of motion of the object is constantly […]
In this post, we will solve a numerical problem based on the principle of a car hydraulic braking system. To solve this numerical, we will take the help of the concepts of the lever, and the pressure principle of Pascal. We will go through the problem statement first and then solve the numerical step-by-step. Numerical […]
In this post, we will list down the differences among the 3 primary types of collisions, elastic, inelastic & perfectly inelastic collisions. Among these types of collisions, elastic and perfectly inelastic collisions are limiting cases; most collisions actually fall into a category between these two extremes. In this third category of collisions, called inelastic collisions, […]
A pulley is a grooved wheel with a rope, chain, or cable running along the groove. A pulley can change the direction of the input force or increase the output force, depending on whether the pulley is fixed or movable. A system of pulleys can change the direction of the input force and make the […]
Improving safety and reducing injuries is a critical application of impulse. In many cases, an object must be brought to a complete stop from a given initial velocity. This indicates that there is a specific change in momentum. If the time taken for momentum to change is increased, the force that must be applied is […]
In this post, we will solve a numerical problem based on the equilibrium of a leaning ladder. To do this you need to first understand the conditions of equilibrium. If you require some revision then you can quickly go through our physics tutorial on the equilibrium conditions first, before attempting this numerical. Anyways, let’s begin […]
Pressure gauges measure the pressure exerted by a fluid, in other words by a liquid or a gas. We will cover 3 types of pressure gauges here, and these are known as (a) Bourdon gauge (b) U-tube manometer and (c) Mercury barometer. Let’s see how these pressure gauges operate. Bourdon gauge In a Bourdon gauge […]
Pascal’s Law states that any change in the pressure applied to a completely enclosed fluid is transmitted undiminished to all parts of the fluid and the enclosing walls. Let’s see how Pascal’s principle is applied to design hydraulic car brakes. When the brake pedal is pushed, the piston in the master cylinder exerts a force […]
This post discusses a typical experimental setup for the Measurement of coefficients of friction. As you well know, it’s easier to push an object from one point to another than to carry it from one point to another. We usually just accept this observation as obvious. But why is this so? The observation leads to […]
Car safety, momentum & force – GCSE Physics – The force on a person in a car crash can be very large and the force can be worked out from the deceleration in a crash. You can also work out the force in a crash using the equation for momentum. Car safety is designed using the concept of momentum and force related to a car crash. The objective is to keep the force on a person as small as possible. Let’s take an example of a car travelling a steep road.
Of all simple machines, the mechanical advantage is easiest to calculate for pulleys. To find out the mechanical advantage of a Pulley, simply count the number of ropes supporting the load. That is the IMA or Ideal Mechanical Advantage of Pulley. Once again we have to exert force over a longer distance to multiply force. To […]
You must have noticed that the racing car tires are made of rubbers, but without any treads. But why is it so? To answer this we have to compare Racecar tires and passenger car tires with the help of the Physics of Car Tires (based on Friction).In other words, we will discuss the topic: Road […]
There are different ways to reduce friction. One way to reduce friction and increase the efficiency of devices such as generators, motors, and fans is to use bearings. Bearings are devices that allow surfaces to slide or roll across each other while reducing the force of friction. Many different types of bearings can be used […]
This post gives a preliminary idea of how physics fundamentals like friction and Newton’s laws of motion are involved in the design aspects of running shoes. Nowadays when sports have become so competitive, a pair of running shoes efficiently designed can bring a huge improvement in the performance of a runner. Here we will see […]
Here we will focus on solving numerical problems involving frictional force or friction and friction coefficient. We will take up a few sample problems as examples and solve those using the step-by-step process.
Mechanical Advantage (MA) is the ability to lift or move objects (load) with a large output force while applying only a little input force. The trade-off is that you must operate the smaller input force for a large distance. This is all seen through the work Equation. Work equals force times distance (W = FS). […]
Statement of three laws of Motion along with their concept building – that is the objective of this post. Statement of three laws of Motion Here we state the 3 laws of motion: Read more about the 2nd Law of motion Read more about the 3rd Law of motion Laws of Motion – some very […]
The acceleration in a uniform circular motion (Fig. 1) has some similarities to the acceleration in projectile motion (Fig. 2) without air resistance, but there are also some important differences between Uniform circular motion and projectile motion. Differences between Uniform circular motion and projectile motion 1) In both kinds of motion, the magnitude of the […]
This Gravity and Mechanical energy Notes [PDF] is primarily for the 10th grade physics syllabus of different international boards. This also covers the class 10 physics syllabus on Gravity and Mechanical energy for boards like ICSE, CBSE, etc. This physics class note covers the theoretical as well as the numerical part of this important chapter. […]
This Force, Momentum, Impulse Notes [PDF download] is primarily for the 11th grade physics syllabus of different international boards. This also covers the class 11 physics syllabus on Electric Circuits for boards like ICSE, CBSE, etc. This physics class note covers the theoretical as well as the numerical part of this important chapter. We hope, […]
The contact force provided by a surface that is perpendicular to another surface is called the normal reaction force. It is often abbreviated to the normal force and represented by FN or N. When an object is allowed to fall under the influence of gravity, we can easily see the effect of the force due […]
Here goes a set of Circular Motion Problems. This set contains Physics numerical problems on centripetal force and uniform circular motion for class 11. Solutions are also appended in this post for our students.
Here you will get 2 sets of IGCSE physics force and motion worksheet with numerical problems with solution. You will get ample scope to test your understanding of motion equations and force concepts. The solutions of worksheet set 1 are given on this page itself. And the solution of the set 2 numerical worksheet is […]
