Physics Engineering

What is engineering physics

Engineering Physics is a unique branch of engineering discipline with a combination of physics, mathematics, electrical engineering and other advanced technology subjects. Graduates in Engineering Physics are provided with a strong base in the science & physics with engineering. Basically we can say that it is a systems approach to engineering. Graduate in engineering physics are prepared to find solutions for complex technological problems in nuclear science, aerospace, computing, etc. Most of the curriculum in engineering physics have strong emphasis on advanced mathematics, chemistry and physics. They are rigorous too. Some of the curriculum also provide insights on material sciences, electronics, computer systems and optics as well.

Branches of physics

Physics deals with the combination of matter and energy. It also deals with a wide variety of systems, about which theories have been developed that are used by physicists. In general, theories are experimentally tested numerous times before they are accepted as correct as a description of Nature (within a certain domain of validity). For instance, the theory of classical mechanics accurately describes the motion of objects, provided they are much larger than atoms and moving at much less than the speed of light.


Statics is the branch of mechanics that is concerned with the analysis of loads (force and torque, or “moment”) acting on physical systems that do not experience an acceleration (a=0), but rather, are in static equilibrium with their environment.

The application of Newton’s second law to a system gives:

Where bold font indicates a vector that has magnitude and direction. F is the total of the forces acting on the system, m is the mass of the system and a is the acceleration of the system. The summation of forces will give the direction and the magnitude of the acceleration will be inversely proportional to the mass. The assumption of static equilibrium of a = 0 leads to:

The summation of forces, one of which might be unknown, allows that unknown to be found. Likewise the application of the assumption of zero acceleration to the summation of moments acting on the system leads to:

M=Iα =0

Here, M is the summation of all moments acting on the system, I is the moment of inertia of the mass and α = 0 the angular acceleration of the system, which when assumed to be zero leads to:

The summation of moments, one of which might be unknown, allows that unknown to be found. These two equations together, can be applied to solve for as many as two loads (forces and moments) acting on the system.

From Newton’s first law, this implies that the net force and net torque on every part of the system is zero. The net forces equaling zero is known as the first condition for equilibrium, and the net torque equaling zero is known as the second condition for equilibrium. See statically indeterminate.

Linear and rotational dynamics

The study of dynamics falls under two categories: linear and rotational. Linear dynamics pertains to objects moving in a line and involves such quantities as force, mass/inertia, displacement (in units of distance), velocity (distance per unit time), acceleration (distance per unit of time squared) and momentum (mass times unit of velocity).


Kinematics is a branch of classical mechanics that describes the motion of points, bodies (objects), and systems of bodies (groups of objects) without considering the forces that caused the motion.Kinematics, as a field of study, is often referred to as the “geometry of motion” and is occasionally seen as a branch of mathematics.


Quantum mechanics is the branch of physics treating atomic and subatomic systems and their interaction with radiation. It is based on the observation that all forms of energy are released in discrete units or bundles called “quanta”. Remarkably, quantum theory typically permits only probable or statistical calculation of the observed features of subatomic particles, understood in terms of wave functions.

About Zaighum Shah 90 Articles
Zaighum Shah is a mechanical engineer having more than 20 years of experience. Zaighum is specializing in product development in Sugar Mill industries. Zaighum has gone through all phases of mechanical engineering and it’s practical implementation. Zaighum has been solving most complex problems, designing new systems and improving existing models and systems.