Lecture 01 Introduction to Engineering Mechanics

This video explains the introduction part of Engineering Mechanics. It consists of basic definitions and meaning of various branches of Engineering Mechanics

Engineering Mechanics: it is the branch of physics which deals with the study of effect of force system on a particle or rigid body.

Deformable bodies: Explained using example of lever and weights, the body which gets deformed or which changes its shape on the application of force.

Rigid bodies: It has mass, dimension, shape and doesn’t deform or change its shape on the application of force. In real there are no rigid bodies its assumed concept just to make calculations easy.

Statics: Deals with the study of force system on a rigid body when it is at rest.

Dynamics: Deals with the study of geometry of motion of rigid body or particle.

Kinematics: Deals the study of geometry of motion of rigid body or particle without considering cause of motion i.e. mass and force.

Kinetics: Deals the study of geometry of motion of rigid body or particle with considering cause of motion.

Mechanics of deformable bodies will be covered in strength of material section. In this subject will be only concentrating on mechanics of rigid bodies.

Lecture 02 | Quadrant System in Engineering Drawing

This video explains about quadrant system required to carry out projections using first angle projection. A two dimensional space is divided into four parts using two perpendicular lines. These four spaces are known as quadrants. Similarly a three dimensional space is divided into four quadrants using two perpendicular planes. These planes are describes as vertical plane (VP) and horizontal plane (HP). HP and VP intersect forming a straight line called as XY line. When a point is located x mm above HP and y mm in front of VP, it is placed in first quadrant. The projections of these points is analogous to shadow falling on the screen opposite to an object. When the light falls on the point in horizontal direction, the shadow falls on the plane opposite to it, i.e. VP. This shadow is the projection of the point in Front View (FV). When the light falls on the point in vertical direction, the shadow falls on the plane opposite to it, i.e. HP. This shadow is the projection of the point i...

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