Engineering Mechanics 1

Engineering Mechanics

Newtons Law of motion:

First Law : A body remains at rest or continues its constant motion, until and unless an external force applied on it.

Second Law : The applied force is equal to product of mass of body and acceleration . Simply written as F = ma. If we increase force on a constant mass then acceleration will increases, and if we double the mass the acceleration will down by half at same application of force.

(Force and acceleration are vector quantity and having same direction)

Third Law : Every action has equal and opposite reaction.

Force : Force is an external agent which moves or try to move or destroy or try to destroy any body or substance.

Here I have consider force as an external agent because force is always lying out side, an internal force always try to oppose this force known as reaction .

[ Mechanics of Life ] : 

This laws are also applicable on human nature.

Application of above laws : We all are maintains our same routine,

For  example if we have a habit of sleeping at late night and wake up late in morning, no exercise, no proper time table for having meal and all other bad habit, then we continue it by saying I feel comfortable in it. But when we get illness, feeling not well and go to the hospital, then doctor suggest us to maintain a healthy routine. We come to home take the medicine and recall the poem “Early to bed and early to rise, make a men healthy wealthy and wise”. Now we try to maintain the healthy routine and after some time we get well.

Here doctor is external force and our habits are inertia.

But after some time we start same earlier habits, due to lack of external force, this is the time  to put an external force known as self discipline.

If you pushed by this force (self discipline) you can accelerate continuously to your goal.

Now third law is applicable on our behavior, every action has equal and opposite reaction. If we would like to force anybody to do some changes in their habits and work technique, then always force them in a positive manner by giving them appreciation, by showing them positive result of changes etc. if we act them positively then they will react positively, if we act with negativity like abusing them, showing their faults then they will also react with negativity.

Productivity and Negativity are inversely proportional.

 For more details click on :-
http://blog.mechanicsoflife.in/2016/05/engineering-mechanics-work-power-energy.html