Shear stress refers to the force per unit area that arises when a material is subjected to a combination of pushing and pulling forces in different directions. For instance, imagine a toy car stuck in between two rocks. When you try to move the car, but it doesn’t move easily because it’s stuck, the force …
Umair Javaid
Bulk stress refers to the amount of force or pressure that is exerted on an object from all directions, such as when a material is compressed or stretched uniformly. In simpler terms, it is the pressure that is applied evenly throughout a substance, causing it to deform or change shape.Examples of bulk stress include a …
Sound is something we can hear when it travels through the air or another material. It happens when something makes the air around it move, kind of like a ripple in a pond. But, we can also make sounds that are too high or too low for our ears to hear. Dogs can hear some …
Energy is typically described as the ability to accomplish work or generate heat. This characterization results in the unit for energy in the International System of Units (SI) being the same as that for work, which is the joule (J). The joule is considered a derived unit of energy and it was named after James …
Air resistance, also called drag, is a force that slows things down when they move through the air. When something moves in the air, the air gets in the way and pushes back on it. The faster it goes, the harder the air pushes back. The size and shape of the object and how thick …
Physical basic quantities are the foundation of all physical measurements. They are used to describe and measure the physical world in a quantitative way. The seven physical basic quantities are defined in terms of specific standards and are fundamental to the International System of Units (SI).Some examples of physical quantities are speed, force, acceleration, energy, …
Buoyant force is what makes things float in water. It’s like when you try to push a beach ball underwater and it bounces back up. This force happens because the water pushes up on things that are in it. It helps boats and other things stay afloat by making them take up space in the …
Torsional force, also known as torque, is a rotational force that causes an object to rotate around its axis or pivot point. Some examples of torsional force in everyday life are opening a jar lid, turning a key, using a wrench, twisting a towel to wring out the water, and swinging a door. The formula …
The normal force is a force that we encounter in our daily lives when an object is placed on a surface and the surface exerts a push against it. For instance, when a person is standing on the ground, the normal force keeps them from sinking into the ground. Although gravity is pulling the person …
Weight (weight force), denoted as W, is synonymous with the gravitational force experienced by an object with mass. The force of gravity, denoted as Fg, is a constant force that pulls all objects towards the center of the Earth, and is responsible for weight. The strength of the gravitational force can be determined by multiplying …
A positive force in physics is a force that moves an object in the direction that we want it to go, or towards a desired outcome. Positive forces can be applied in various ways such as pushing, pulling, or using some other method to create a force in the intended direction. Having a good understanding …
In the context of physics, resilience denotes the capacity of a material or system to withstand stress, deformation or damage, while still retaining its structural integrity and ability to function as intended. This means that a physical entity that is resilient can withstand external forces and bounce back to its original state or level of …
Negative acceleration is the process of slowing down an object’s speed or velocity. It happens when an object is moving in a particular direction and its speed decreases over time. Negative acceleration is also known as deceleration and is measured in meters per second squared (m/s²). For instance, when a car brakes to stop, it …
Reaction force is a force that is equal in magnitude and opposite in direction to an action force. It is an essential concept in Newton’s third law of motion, which states that for every action, there is an equal and opposite reaction. In simpler words, when you push something, that object pushes back on you …
The third law of motion states that for every action, there is an equal and opposite reaction. This means that whenever an object exerts a force on another thing, the second object will exert an equal but opposite force back on the first object. In other words, forces always occur in pairs and are of …