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

Shear forces and bending moments, Shear Forces and Bending Moments: ...

Shear Forces and Bending Moments: A beam is a structural member, subjected to a system of external forces (involving inclined load) to generate the bending of the member in

Define economics order quantity, a) Define Economics Order Quantity. Derive...

a) Define Economics Order Quantity. Derive, using neat diagram, the mathematical formula for economic order quantity. b) The purchase manager of an industrial unit is placing on

Calculate the value of force - frictionless pulley, Calculate the value of ...

Calculate the value of force - frictionless  A block weighing 5KN is attached to the chord that passes over the frictionless pulley, and supports weight of 2KN. The coeffic

Boiler, What is scale formation in case of a boiler

What is scale formation in case of a boiler

Combined gas turbine/Rankine cycle, b. Assuming a 20 MW simple cycle gas tu...

b. Assuming a 20 MW simple cycle gas turbine with a firing temperature of 1600K develop an analysis of a combined cycle. Assume that Tmax in the Rankine cycle is 560 C, Pmax = 60

Business Management techniques, how do I Create appropriate costing systems...

how do I Create appropriate costing systems and techniques for specific engineering business functions.

Key words used in road under special conditions, Keywords used in appropria...

Keywords used in appropriate technology: Hill Roads : Roads in hilly and mountainous terrain. Landslides : The slippage of mass of hill face. Retaining Walls : Str

QFD chart and engineering specifications, Deliverables: A QFD chart, sh...

Deliverables: A QFD chart, showing the relationships between the customer requirements and the engineering specifications. (Refer to the Ullman QFD chart posted on My

Find out the final extension and the work done, Find out the final extensio...

Find out the final extension and the work done: Problem:  (i) A spring of stiffness 4 N/cm of extension is extended steadily yet the force of 20 N is reached. Find out th

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