## Fluid mechanics basics

Fluid statics

Created by Gorbi John - Mechanical engineer

Students: 7026, Price: Free

This course will brief you about the basics of fluid mechanics.We start with various definitions it's explanation.Then into different concepts like viscosity,surface tension , capillarity,thermodynamic properties of fluids.We are explaining each concept by taking a dailylife example.Then we formulate the mathematical expression for the same to measure the magnitude of each property

## Engineering Mechanics – An Introduction

Engineering Mechanics - Study of internal resistance developed in the body in response to external loading

Created by Yoshida Rao - Mechanical Engineering Instructor

Students: 6694, Price: Free

This course is for students in Physics, Mechanical Engineering, Applied Mechanics and Civil Engineering. This course introduces many definitions like Structures, Mechanisms, Deformable body, Rigid Body, Body force, Boundary force, Method of Sections, Equilibrium equations, degrees of freedom, Trusses, Beams, Frames, Cables and Shafts. This short course prepares student for the further study of Mechanics of Solids, Strength of Materials or Design of structures.

## Basics for Engineering Mechanics: Statics

First Course: General Principles and Force Vectors

Created by Mohammed M. H. Al-Tholaia - Assistant Professor and Professional Engineer

Students: 896, Price: Free

The main objective of this course is to illustrate Engineering Mechanics general principles and study in details force vectors in the two and three dimensional systems with several application examples. It includes several subtopics which can be summarized as follows: fundamental concepts in Mechanics, Units of Measurements in SI and FPS, numerical calculations and main steps for analysis, Vectors and Scalars, Vector Operations, Coplanar Forces addition and resultant, Cartesian vectors, and their resultant, Position vectors, Force vector along specific line of action, and Vectors dot product. So, student can learn the basics of Engineering Mechanics in general and Statics in particular such as the classifications, definitions, limitations and so on. In addition, the scalars and vectors definitions, differences and illustrations are provided in the course. Vectors operations, addition, subtraction, division and multiplication by a scalar are explained in details with several examples. Systems of units of measurements which are SI and FPS are provided with conversion factors for base and derived units. Forces such as coplanar, concurrent, and collinear are studied to find their resultants, magnitudes, and to express them as Cartesian vectors in both the two dimensional and three dimensional systems. Also, the direction angles of a force and resultant are delivered in details in the course. Position vector and force projection on a line are provided with several application examples. In addition, the vectors dot product and its applications have been provided with several examples.

## Engineering Mechanics

Basics of Equilibrium

Created by Apurv Vaidya - Structural Engineer

Students: 669, Price: Free

This is the basic course on the chapter - Equilibrium.

The contents of this course are:

1) Definition of Equilibrium - In classical mechanics, a particle is in mechanical equilibrium if the net force on that particle is zero.

2) Free Body Diagram - Free-body diagrams are diagrams used to show the relative magnitude and direction of all forces acting upon an object in a given situation.

3) Lami's Theorem - When three forces acting at a point are in equilibrium, then each force is proportional to the sine of the angle between the other two forces.

4) Conditions of Equilibrium - ∑Fx=0, ∑Fy=0, translational equilibrium, ∑M=0, rotational equilibrium. The above three equations should be satisfied for 2D Equilibrium of the body. So in total there are three conditions of equilibrium for two dimensional cases and six conditions of equilibrium for three dimensional cases.

5) Problem on Equilibrium

6) Types of supports - i) Simple support (sliding support and roller support), ii) Hinge support or pin support, iii) Fixed support

7) Types of beams - i) Simply supported beam, ii) Cantilever beam, iii) Fixed beam, iv) Continuous beam, v) Overhanging beam

8) Types of loading - i) Concentrated load or Point load, ii) Uniformly Distributed Load (U. D. L.) or Rectangular Loading, iii) Uniformly Varying Load (U. V. L.) or Triangular Loading.

## Basics of Civil Engineering Mechanics – Beginner Course

A Basic Course for Civil Engineering Students to get Deeper Insights about Force, Vectors, Momemtum & Numericals

Created by RAHUL NK - CIVIL ENGINEER / STRUCTURAL ENGINEER / ACADEMICIAN

Students: 475, Price: Free

Students can able to learn the basic civil engineering concepts like

** 1. SCOPE OF CIVIL ENGINEERING**: Housing, Roads, Bridges and Dams, Basic Introduction of Building Materials – cement, bricks/blocks, aggregate(s), timber, steel, composites, Components of a structure - Substructure, Super structure and Finishes.

** 2. CO-PLANAR CONCURRENT FORCES**:Principle of statics, Particle, continuum, Rigid body, Force and its characteristics, Types of forces and classification of force systems, Principle of physical independence of forces, Principle of transmissible of forces, Principle of superposition of forces, Composition of forces - Definition of Resultant; Composition of co-planar concurrent force system, Parallelogram law of forces, Resolution of forces.

** 3. MOMENT OF FORCE: **Moment of a force, Couple, Characteristics of couples, Varignon’s theorem of moments, Composition of co-planar - non-concurrent force system, Equivalent force - couple system, Numerical problems on composition of co-planar non-concurrent force systems.

** 4. EQUILIBRIUM OF FORCES**: Equilibrium of concurrent, parallel and general forces in a plane, equilibrium of three forces in a plane, Definition of equilibrium, Lami's theorem; Resultant and equilibrium of concurrent and parallel forces in space, Numerical problems on equilibrium of co-planar – concurrent and non-concurrent force systems.

** 5. CO-PLANAR NON-CONCURRENT FORCES: **Introduction to beams, Types of loads and supports, Support reactions, statically determinate beams with point load (normal and inclined) and uniformly distributed/varying loads, Numerical problems

**.**

** 6. FRICTION: **Friction-static friction, Laws of friction, Limiting friction, Angle of friction, angle of repose, Impending motion on horizontal and inclined planes, Ladder and block friction, Numerical problems.

** 7. CENTROID: **Centroid of line and area, Centroid of regular figures, Locating the centroid of triangle, semicircle, quadrant of a circle and sector of a circle using method of integration, Centroid of composite sections; Numerical problems.

** 8. MOMENT OF INERTIA: **Second moment of area, polar moment of inertia, Radius of gyration, Perpendicular and Parallel axis theorems, Moment of Inertia of rectangular, circular and triangular areas from method of integration, composite sections, Numerical problems.