Recently Active Mechanics Questions

plz submit toughest problems you have come across in projectiles........ ...

*Image* must xplain ur ans. too!!!![1] ...

A 14.7m high vertical wall is situated at a distance of 19.6m from a person.At what angle with the horizontal should an object be thrown by that personat a speed of 19.6 m/s so that it clears the wall? ...

*Image* post ur complete solution too!!!! ...

*Image* how to find moment of inertia of rod shown above about the axis passing through its mid-point at an angle 60 degree(shown in black line) ...

Plz explain Which of the following functions of time represent (a)simple harmonic (b) periodic but not simple harmonic and (c) non-periodic motion ? Give period for each case of periodic motion ( ω is any positive constant) ...

*Image* how has the time period been derived? ...

Can fluids sustain compressive strain? ……………..If no, then why longitudinal waves can propagate in all elastic media? ...

Why is the potential energy of a particle inside a liquid negative? ...

y=a sin(kx-ωt+phi) This is the eq. of a progressive wave moving in positive x-axis direction..how has it been derived? ...

if total energy of a particle is zero,is its linear momentum neccesarily zero????xplain ur answer too! ...

*Image* plz show it mathematically!!!....thanx! ...

*Image* i think it shud remain constant ...........is it right??? well can u give a sort of mathematical xplanation for same? i have done mathematically.............but not quite sure of it ...... so wanna get best mathematic ...

*Image* i think (B) shud be the only answer............ but answer given in book........is (B),(D)......... plz if anyne thinks d is answer too.........plz give rational arguments for that............ ...

*Image* post solution too!!!! ...

*Image* POST SLUTION PLZ!!!!! ...

*Image* post solution too!!!! ...

*Image* i m getting ans. as (B) i.e. 1/2.............. is it correct????????? ...

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*Image* post ur working too!!!! ...

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*Image* *Image* is the acceleration= M'g/[M+m+M'] correct?????? ...

Transverse waves can be propagated only in solids.Then , why waves in an ocean are a combination of longitudinal and transverse waves? ...

*Image* wat is difference in two cases..............why in one case we take tension on two sides as same and y in other as different on two sides>??????????? ...

*Image* prove that the tension in the two parts of the string are equal!!!!!! ...

Its just to find the eqn of this....in rest *Image* ...

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Plz explain Which of the following functions of time represent (a)simple harmonic (b) periodic but not simple harmonic and (c) non-periodic motion ? Give period for each case of periodic motion ( ω is any positive constant) ...

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what do u mean by sinusoidal function? ...