Show mass energy relation, Mechanical Engineering

Assignment Help:

Q. Show Mass energy Relation?

Until the time of Einstein, mass and energy were considered as two different physical quantities. But in 1905, with the help of postulates of the special theory of relativity Einstein demonstrated that neither mass nor energy were conserved separately, but they could be traded one for the other and neither mass nor energy were conserved separately, but they could be traded one for the other and only the "total mass energy" was conserved. The most famous relationship between the mass and the energy given by Einstein is

E = mc2

Here m is the effective mass, c is the speed of light, and E is the energy equivalent of the mass. According to this relation a certain amount of energy of any form can be considered as mass or conversely. Energy will increase if mass decreases; mass can be turned into energy. If the mass increases, energy must be turned into energy. If the mass increases, energy must be supplied, energy can be turned into mass. Mass and energy are interchangeable. Mass and energy is the same thing. According to Einstein's first postulate of relativity, all laws related with physical events have the same form in all inertial frames. Thus Newton's second law and work energy theorem will also remain valid in all inertial frames.

F = dp / dt = dp (mv) /dt

Now from the statement of work energy theorem

Change in kinetic energy = work done by the particle

D Ek = dW = Fdx


Related Discussions:- Show mass energy relation

Bolting procedures for equipment, Before installing a bolt, stud or nut, th...

Before installing a bolt, stud or nut, threads shall be examined to ensure that there are no incompletely cut threads in the engagement zone (both internal and external) or burns,

Evaluate the motion of the system, Evaluate the motion of the system: ...

Evaluate the motion of the system: If in above Example, the block A is resting on an inclined plane at 45 o to horizontal as illustrative in Figure, find out the motion of th

Explain the working and construction of universal joint, (a) Describe clear...

(a) Describe clearly the constructional details and operation of various rear axle drives with the engine placed at the front. Illustrate your answer with simple and neat sketch.

What are the problems to improve the deficirncies og iges, Problems to impr...

Problems to improve the deficirncies of IGES Within the framework of this interface, an attempt was to be made to improve the deficiencies of IGES, SET and VDAFS which have the

What do you mean by an inertial reference, (a) Comment on the require to id...

(a) Comment on the require to idealise a body as a particles, a rigid body or a continuum. (b) What do you mean by an inertial reference ? (c) Define quantitatively a force 1

Determine the enhance in volume of the vessel, Determine the enhance in vol...

Determine the enhance in volume of the vessel: A thin spherical vessel of diameter 800 mm and thickness 6 mm is filled through a liquid at an internal pressure of 1.5 N/mm 2 .

Calculate the natural frequency, (a) A circular cylinder of mass M and radi...

(a) A circular cylinder of mass M and radius R connected by a spring of stiffness ‘K'. It is free to roll on horizontal surface without slipping. Calculate the natural frequency.

Motion of two bodies - rough surface and smooth pulley, Motion of two bodie...

Motion of two bodies - rough surface and smooth pulley: THE HORIZONTAL SURFACE IS ROUGH AND THE STRING IS PASSING OVER SMOOTH PULLEY. Figure shows two weights W 1 and W 2

Use of high temperature materials in furnaces, Q. Use of high temperature m...

Q. Use of high temperature materials in Furnaces? Often, furnace tubing and refractory protected membrane walls are fabricated from plain carbon steel with a minimum of 0.25% c

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd