Surface tension is a property of liquids that arises due to the cohesive forces between the molecules at the surface of the liquid. In other words, it is the measure of the attractive force that holds the molecules of a liquid together at the surface. The molecules at the surface of a liquid experience an…
Escape velocity is the minimum velocity that an object needs to achieve in order to escape the gravitational pull of a celestial body, such as a planet, moon, or star, and move away from it into space. The escape velocity is calculated using the following formula: Ve = sqrt(2GM/r) Where: Ve = escape velocity G…
Satellites in circular orbits move around the Earth at a constant distance from the Earth’s center. This type of orbit is also known as a “geostationary orbit” or “geosynchronous orbit”. In this type of orbit, the satellite takes the same amount of time to complete one orbit as the Earth takes to complete one rotation…
A geostationary orbit is a circular orbit around the Earth, with an altitude of approximately 35,786 km (22,236 miles), in which a satellite appears to remain stationary with respect to a fixed point on the Earth’s surface. This means that the satellite moves at the same rate as the Earth’s rotation, completing one orbit in…
Mechanics is a branch of physics that deals with the study of motion, forces, and energy in physical systems. It is a fundamental field of science that provides the basis for understanding the behavior of a wide range of mechanical systems, from simple machines to complex structures like bridges, airplanes, and spacecraft. Mechanics is divided…
Gravitational potential is a concept in physics that describes the amount of work that must be done to move an object from one point in a gravitational field to another point. It is usually denoted by the symbol “V” and measured in units of joules per kilogram (J/kg) or meters squared per second squared (m^2/s^2).…
Hooke’s law is a principle in physics that states that the force needed to stretch or compress a spring is proportional to the distance the spring is stretched or compressed from its equilibrium position. This law is named after Robert Hooke, an English physicist who first described it in 1676. Hooke’s law can be expressed…
Angular simple harmonic motion is a type of periodic motion in which an object rotates about a fixed axis with an angular frequency that is proportional to the displacement from the equilibrium position, and the direction of rotation is opposite to the displacement. The equation of angular simple harmonic motion is given by: θ(t) =…
Damped oscillation refers to the behavior of a system that undergoes oscillation (i.e., periodic motion) but with the amplitude of the oscillation decreasing over time due to the presence of damping. In one dimension, a simple example of a damped oscillation is a mass-spring system with damping, where a mass is attached to a spring…
The equilibrium of rigid bodies refers to the state of a rigid body when it is at rest or moving with a constant velocity, and the net force and torque acting on it are both zero. In other words, the body is not accelerating and is in a state of balance. To determine the equilibrium…
