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

Processes , example on operation sheet?

example on operation sheet?

Beam and types of beam - support reaction, Beam: Sol.: A beam can be...

Beam: Sol.: A beam can be defined as a structural element which has one dimension (length) considerable larger As compared to the other two direction, which is breadth an

Describe the terms fluid jet and vane, (a) Describe the terms "Fluid jet" a...

(a) Describe the terms "Fluid jet" and "Vane" in Fluid Machine. (b) What is impulse - momentum principal in analysis and design of turbo machines.

Find out power transmitted by belt, Find out power transmitted by belt: ...

Find out power transmitted by belt: A belt is running over pulley of 1.5m diameters at 250RPM. The angle of contact is 120º and coefficient of friction is 0.30. If maximum te

Internal combustion engine - thermodynamics, Internal combustion engine - T...

Internal combustion engine - Thermodynamics: Internal combustion engine is popularly known as I.C. engine, is heat engine that converts the heat energy released by the combust

Evaluate maximum stress, Show that for a flat circular steel plate subjecte...

Show that for a flat circular steel plate subjected to uniform pressure on one surface, the maximum stress when the periphery is freely supported is 1.65 times that when the periph

Diesel cycle, The pressure and temperature of a diesel cycle at the start a...

The pressure and temperature of a diesel cycle at the start are 1 bar and 20C respectively and the compression ratio is 14. The pressure at the end of expansions 2.5 bar. Find perc

Explain the advantages of rack cutter, Explain the Advantages of Rack Cutte...

Explain the Advantages of Rack Cutter? a. A single cutter of any specific pitch can cut gears of any number of teeth having similar pitch. b. The tooth profile produced is m

What are methods used in rating for time study, a)What are methods used in ...

a)What are methods used in rating for time study. Illustrate them. b) Write down principles of motion economy.

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