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## What is Engineering Mechanics?

**Engineering Mechanics** is a subject that deals with the *principles*, *calculations, and laws of Forces*; along with their applications to Mechanical Engineering problems. Engineering Mechanics is used to solving *real-life designing*, *analyzing*, and *constructing *things. It is one of the basics and important subjects that every student is supposed to learn.

*What You Will Find In This Page?*

*Engineering Mechanics Syllabus.**Engineering Mechanics Basics.**Engineering Mechanics Textbook. (For Reference)*

**Engineering Mechanics Syllabus:**

**Engineering Mechanics** Syllabus is the particulars that we read or learn in our semester or academics. As the syllabus will vary according to their University, so I listed out the main and important syllabus that everyone will follow.

- Trusses and Frames.
- Kinematics.
- Kinetics Analysis of Rotation.
- Analysis of General Plane Motion.
- Centroid and Moment Of Inertia.

**Engineering Mechanics Basics:**

Engineering Mechanics can be studied in the early stage of *Engineering *or *equal course *and *Diploma*. So, engineering mechanics mainly consists of two groups. They are

- Static
- Dynamics

**Static: **

If a body is at *rest *and doing no work, then the body is called the **Static**. The mechanics of a body that deals with the *forces *and their *effects *while it is in a rest position, then it can be said **Static Mechanics**.

**Dynamic: **

If a body is at *moment *and doing some work, then the body is called the **Dynamic**. The mechanics of a body that deals with the forces and their effects while the body in motion, then it can be said **Dynamic Mechanics**.

The dynamics are divided into two parts. They are

- Kinetics
- Kinematics

**Kinetics**: It is the branch that deals with or studies the*motion*of a body considering the*responsible forces*of its motion, it is called**Kinetics**.**Kinematics**: The branch that deals with or studies the*motion*of a body*without*considering the forces responsible for it, then it is called**Kinematics**.

**More Basics:**

**Force:** The Force is defined as the agent or action which tends to *move *or *stop *the motion of a body.

The units of Force in S.I system can be express in *Newtons*.

The units of Force in M.K.S system can be express in *Kilogram-force*.

**Laws of Forces:**

There are three types of Laws of Force. They are

- Parallelogram Law of Force.
- Triangle Law of Force.
- Polygon Law of Forces.

**1. Parallelogram Law of Force:**

If two forces let say P and Q having some magnitude and direction are acting on a body on two adjacent sides (let say x and y sides) of a parallelogram, then the *resultant *will be represented by the diagonal which passes through their points of intersection.”

The Resultant force is given by

**2. Triangle Law of Forces:**

It states that if *two forces *acting simultaneously on a particle and represented in *magnitude *and *direction *by two sides of a triangle, then their *resultant *may be represented by the third side of the triangle that can be taken in the opposite order.

**3. Polygon Law Of Forces:**

It states that if the *number of forces* acting on a particle can be represented in *magnitude *and *direction *by sides of a polygon taken in order and resultant is the closing side of it in the opposite order.

The resultant force is given by

These are the three laws of forces.

**Lami’s Theorem:**

Lami’s Theorem states that if *three co-planar forces* acting at a point be in equilibrium, then each force is proportional to the *Sine *of the angle between the other two forces.

The mathematical formula of the *Lamis Theorem* is given as

**Moment of Force:**

If a force is act on a body then the *turning effect *produced is called as the Moment of Force. The moment of a force is equal to the product of force and the perpendicular distance of the point.

The diagram is as shown in the figure.

**Varignon’s Principle of Moment: **

It states that if a number of co-planar forces acting on a particle, then the *algebraic sum* of their moments about any point is equal to the moment of their resultant force.

**Couple:**

The *two equal* and *opposite forces*, whose lines of action are different are called *Couple*. It is shown in the figure.

The moment of a couple is the *product *of one of the forces and the distance between two forces or arms of the couple.

**Moment of Inertia:**

The moment of inertia is the moment of the moment or second moment of mass.

m = mass of the small particles

k = distances from a fixed line.

**Engineering Mechanics Textbook:**

Here I am mentioning a few **Engineering Mechanics Textbooks** that will help you in your academics.

*Engineering Mechanics*by**Pearson**.**Click To Buy This Book***Engineering Mechanics*by**Dr. Vijay Kumar Reddy**.*Engineering Mechanics*by**F. F. Singer**.**Click To Buy This Book***Engineering Mechanics*, statics and dynamics by**Hibbler**,**R.C**and**Ashok Gupta**.**Click To Buy This Book***Engineering Mechanics*by**Bhavikatta**,**S.S**, and**Rajashekarappa**,**K.G**.**Click To Buy This Book**

I will be updating this list of books frequently according to the new editions. So, please be tuned to this page.