Satyavrat Sarangi

A jobless man applied for the job of “office boy” at Microsoft. The HR interviewed him then watched him cleaning the floor as a test. “You are employed” he said. “Give me your e-mail address and I’ll send you the forms to fill in as well as when you may start”. The man replied, “But I don’t have a computer, neither an email.” “I’m sorry”, said the HR manager, “If you don’t have an email, that means you do not exist. And who doesn’t exist, cannot have the job.” The man left with no hope at all. He didn’t know what to do, with only $10 in his pocket. He then decided to go to the supermarket & buy a 10 Kg tomato crate. He then sold the tomatoes in a door to door round. In less than two hours, he succeeded to double his capital. He repeated the operation three times, and returned home with $60. The man realised that he can survive this way, and started to go everyday earlier and return late. Thus, his money doubled or tripled everyday. Shortly, he bought a cart, then a truck, ...

During a robbery in Guangzhou, China, the bank robber shouted to everyone in the bank: “Don’t move. The money belongs to the State. Your life belongs to you.” Everyone in the bank laid down quietly. This is called “Mind Changing Concept” Changing the conventional way of thinking. When a lady lay on the table provocatively, the robber shouted at her: “Please be civilized! This is a robbery and not a rape!” This is called “Being Professional” Focus only on what you are trained to do! When the bank robbers returned home, the younger robber (MBA-trained) told the older robber (who has only completed Year 6 in primary school): “Big brother, let’s count how much we got.” The older robber rebutted and said: “You are very stupid. There is so much money it will take us a long time to count. Tonight, the TV news will tell us how much we robbed from the bank!” This is called “Experience.” Nowadays, experience is more important than paper qualifications! After the robbers had left...

Production part approval process ( PPAP ) is used in the automotive supply chain for establishing confidence in component suppliers and their production processes, by means of demonstrating that: "....all customer engineering design record and specification requirements are properly understood by the supplier and that the process has the potential to produce product consistently meeting these requirements during an actual production run at the quoted production rate." Although individual manufacturers have their own particular requirements, the Automotive Industry Action Group (AIAG) has developed a common PPAP standard as part of the advanced product quality planning (APQP) – and encouraging the use of common terminology and standard forms to document project status. The PPAP process is designed to demonstrate that the component supplier has developed their design and production process to meet the client's requirements, minimising the risk of failure by ...

  Advanced product quality planning (or APQP ) is a framework of procedures and techniques used to develop products in industry, particularly the automotive industry. It is quite similar to the concept of Design for Six Sigma (DFSS). It is a defined process for a product development system for General Motors, Ford, Chrysler and their suppliers. According to the Automotive Industry Action Group (AIAG), the purpose of APQP is "to produce a product quality plan which will support development of a product or service that will satisfy the customer." The process is described in the AIAG manual The Objectives of APQP Some of the bottom line goals of product quality planning are... effective communications with all those who are involved in the implementation scheme. timely completion of required goals. minimal or no quality problems. minimal risks related to quality during product launch. Phases of APQP They include... ...

A poor couple who lived in a small village in London. They had only one son. Gave him the best education. Son graduated as an Engineer in the nearby city. Eventually,got married to a rich girl. Initially, they lived with his parents in the village. Soon the wife got tired of village life and persuaded the husband to move to the city leaving the old parents in the village. As time passed by the husband seen an advert in the newspaper about a vacancy in Barnet. He was successful and lived in Barnet for years with his wife. Regularly he used to send money to parents. Eventually with time he stopped and forgot about his parents ever existed. Every year he made Hajj(pilgrimage) and immediately after that he used to see someone telling him in a dream that his Hajj is not accepted. One day he related story to a pious Aalim who advised him to go back to London to visit his parents. The man flew to London and reached the boundary of the village. Everything had changed. H...

Unit Systems . In mechanics calculations, both absolute and gravitational systems of Units are employed. The fundamental units in absolute systems are length , time , and mass , And from these units, the dimension of force is derived. Two absolute systems which have Been in use for many years are the CGS (centimeter-gram-second) and the MKS (meter-kilogram-second) systems. Another system, known as MKSA (meter-kilogram-second-ampere), links the MKS system of units of mechanics with electromagnetic units.

Strength of materials deals with the relations between the external forces applied to elastic bodies and the resulting deformations and stresses. In the design of structures and machines, the application of the principles of strength of materials is necessary if satisfactory materials are to be utilized and adequate proportions obtained to resist functional forces. Forces are produced by the action of gravity, by accelerations and impacts of moving parts, by gasses and fluids under pressure, by the transmission of mechanical power, etc. In order to analyze the stresses and deflections of a body, the magnitudes, directions and points of application of forces acting on the body must be known. Information given in the Mechanics section provides the basis for evaluating force systems. The time element in the application of a force on a body is an important consideration. Thus a force may be static or change so slowly that its maximum value can be treated as if it were static...

Torque or moment of a force is a measure of the tendency of the force to rotate the body upon which it acts about an axis. The magnitude of the moment due to a force acting in a plane perpendicular to some axis is obtained by multiplying the force by the perpendicular distance from the axis to the line of action of the force. (If the axis of rotation is not perpendicular to the plane of the force, then the components of the force in a plane perpendicular to the axis of rotation are used to find the resultant moment of the force by finding the moment of each component and adding these component moments algebraically.) Moment or torque is commonly expressed in pound-feet, pound-inches, kilogram-meters, etc. The metric SI unit is the newton-meter (N · m).

Velocity is the time-rate of change of distance and is expressed as distance divided by time, that is, feet per second, miles per hour, centimeters per second, meters per second, etc.

Acceleration  is defined as the time-rate of change of velocity and is expressed as velocity divided by time or as distance divided by time squared, that is, in feet per second, per second or feet per second squared; inches per second, per second or inches per second squared; centimeters per second, per second or centimeters per second squared; etc. The metric SI unit is the meter per second squared.

Stress is a physical quantity that expresses the internal forces that neighboring particles of a continuous material exert on each other. For example, when a solid vertical bar is supporting a weight, each particle in the bar pulls on the particles immediately above and below it. When a liquid is under pressure, each particle gets pushed inwards by all the surrounding particles, and, in reaction, pushes them outwards. These macroscopic forces are actually the average of a very large number of intermolecular forces and collisions between the molecules in those particles.

Deformation (Strain) in continuum mechanics is the transformation of a body from a reference configuration to a current configuration. A configuration is a set containing the positions of all particles of the body.

Elongation is  the percentage increase in original length (strain) of a rubber specimen as a result of tensile force (stress) being applied to the specimen. Elongation is inversely proportional to hardness, tensile strength, and modulus. That is, the greater a material’s hardness, tensile strength, and modulus, the less it will elongate under stress. It takes more force to stretch a hard material having high tensile strength and high modulus than to stretch a soft material with low tensile strength and low modulus.

Standard Pound Force : For use in defining the magnitude of a standard unit of force, known as the pound force, a fixed value of 32.1740 ft/sec2, designated by the symbol g0, has been adopted by international agreement. As a result of this agreement, whenever the term mass, M, appears in a mechanics formula and the substitution M = W/g is made, use of the standard value g0 = 32.1740 ft/sec2 is implied although as stated previously, it is customary to use approximate values for g except where extreme accuracy is required.

In science and engineering, the weight of an object is usually taken to be the force on the object due to gravity

The center of gravity of a body, volume, area, or line is that point at which if the body, volume, area, or line were suspended it would be perfectly balanced in all positions. For symmetrical bodies of uniform material it is at the geometric center. The center of gravity of a uniform round rod, for example, is at the center of its diameter halfway along its length; the center of gravity of a sphere is at the center of the sphere. For solids, areas, and arcs that are not symmetrical, the determination of the center of gravity may be made experimentally or may be calculated by the use of formulas.

A machine is a tool that consists of one or more parts, and uses energy to meet a particular goal. Machines are usually powered by mechanical, chemical, thermal, or electrical means, and are often motorized. Historically, a power tool also required moving parts to classify as a machine. However, the advent of electronics technology has led to the development of power tools without moving parts that are considered machines.

Horsepower is the unit of power that has been adopted for engineering work. One horsepower is equal to 33,000 foot-pounds per minute or 550 foot-pounds per second. The kilowatt, used in electrical work, equals 1.34 horsepower; or 1 horsepower equals 0.746 kilowatt. However, in the metric SI, the term horsepower is not used, and the basic unit of power is the watt. This unit, and the derived units milliwatt and kilowatt, for example, are the same as those used in electrical work.

Power , in mechanics, is the product of force times distance divided by time; it measures the performance of a given amount of work in a given time. It is the rate of doing work and as such is expressed in foot-pounds per minute, foot-pounds per second, kilogram-meters per second, etc. The metric SI unit is the watt, which is one joule per second.

Work , in mechanics, is the product of force times distance and is expressed by a combination of units of force and distance, as foot-pounds, inch-pounds, meter-kilograms, etc. The metric SI unit of work is the joule, which is the work done when the point of application of a force of one newton is displaced through a distance of one meter in the direction of the force.

Mass is a measure of the inertia of a body. In other words  mass is a property of a physical system or body, giving rise to the phenomena of the body’s resistance to being accelerated by a force and the strength of its mutual gravitational attraction with other bodies

Inertia is the property of matter that causes it to resist any change in its motion or state of rest.

Matter is any substance that occupies space; gases, liquids, solids, electrons, atoms,molecules, etc., all fit this definition.

Force may be defined simply as a push or a pull; the push or pull may result from the force of contact between bodies or from a force, such as magnetism or gravitation, in which no direct contact takes place.

Kinetics is the branch of dynamics that deals with both the forces acting on bodies and the motions that they cause.

Dynamics is the branch of mechanics that deals with bodies not in equilibrium, i.e., the forces acting on them cause them to move with non-uniform velocity.

Statics is the branch of mechanics that deals with bodies in equilibrium, i.e., the forces acting on them cause them to remain at rest or to move with uniform velocity.