Applied Mechanical Equipment

Introduction:

It is defined as the science which describes and predicts the condition of rest or motion of bodies under the action of forces.

Types:

(A) Mechanics of rigid bodies:

(a) Statics: It is the branch of mechanics of rigid bodies which deals with the forces and the effect by the action upon the bodies at rest.

(b) Dynamics: It is the branch of mechanics of rigid bodies which deals with the forces and their effects by the action upon the bodies in motion.

(i) Kinetics: That branch of dynamics which deals with the bodies in motion due to the application of forces.

(ii) Kinematics: It is that branch of dynamics which deals with bodies in motion without any reference to forces which are responsible for motion.

Rigid Body:

It is a body which can retain its shape and size even if subjected to external courses. In reality, all bodies change their shape and size on the application of force. However, changes are so small that they are assumed to be perfectly rigid body.

Deformable Body:

If appreciable change occurs in shape and size of a body by applying force, it is called a deformable body.

Particle:

It is a material of a body which is so small that its dimension may be treated as negligible compare to other`s dimension. Mass of particle may be assumed to be concentrated at a point and a particle is sometimes called a mass point.

System of units:

There are 4 system of units commonly used;

* CGS Unit ( Centimeter, Gram, Second)
*FPS Unit ( Foot, Pound, Second)
*MKS U nit (Meter, Kilogram, Second)
*SI Unit.