Wednesday, June 13, 2018

An Introduction to Mechanical Engineering Part 1 By Stewart McWilliam and Paul Shayler

An Introduction to Mechanical Engineering Part 1 By  Stewart McWilliam and  Paul Shayler
Unit 1 Solid mechanics
Unit 2 Materials and processing
Unit 3 Fluid dynamics
Unit 4 Thermodynamics
Unit 5 Electrical and electronic systems
Unit 6 Machine dynamics
Such contact forces occur where bodies interact with each other; however, they can also occur internally within a single body. In this case, it is the microscopic particles, e.g. molecules, atoms,etc. which contact each other and interact with forces between themselves. For this chapter, we will generally be dealing with macroscopic bodies where the interaction forces occur at external surface contacts. Another type of force occurring is that which arises from the remote influence of one body on another, such as the force of gravity. The Earth’s gravity acting on a person gives rise to a force acting at his or her centre of mass. This type of force is termed the person’s weight and acts vertically downwards or towards the centre of the Earth. Magnetic attraction is another example of a remote (or non-contact) force arising from the influence of a magnetic field on a body.


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