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

Find out the modulus of elasticity, Find out the modulus of elasticity: ...

Find out the modulus of elasticity: A unidirectional FRP is produced with fibre volume ratio of 60%. The density of fibre is 1480 kg/m 3 and that of matrix is 1200 kg/m 3 . C

Determine the forces in all the members of the truss, A truss of span 10 me...

A truss of span 10 meters is loaded as shown in Figure. Determine the forces in all the members of the truss by Method of Joint.

Von-mises stress and strain distributions, Consider a pressure vessel as sh...

Consider a pressure vessel as shown in the figure. The cylinder has a longitudinal axis of rotational symmetry and is also symmetric with respect to a plane passing through it

Determine work done per second, A nozzle of 50 mm. dia. delivers a stream o...

A nozzle of 50 mm. dia. delivers a stream of water that strikes a flat plate which is held normal to the axis of stream. If the issuing jet has a velocity of 15 m/sec., determine:

Explain about unit pipe racks, Q. Explain about Unit pipe racks? Unit p...

Q. Explain about Unit pipe racks? Unit pipe racks are the main arteries carrying the pipes and cables into the units, and as such should be centrally located. They are usually

Find out the centroid of the shaded area, Find out the centroid of the shad...

Find out the centroid of the shaded area: Find out the centroid of the shaded area illustrated in Figure (a). Solution The shaded area A may be considered as the

What is the initial velocity of the ball, What is the initial velocity of t...

What is the initial velocity of the ball: A ball is horizontally thrown from the top of a building 60 m height, hits the horizontal ground 25 m from the base of the building a

How will you measure the engine oil level?, (a) Why do we change the engine...

(a) Why do we change the engine oil at periodic intervals? (b) What are the recommended instructions to change engine oil? (c) How will you measure the engine oil level?

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