Recently Active Mechanics Questions

please solve ques no 20 , 30 and 41 ...

A bar of cross section A is subjected to equal and opposite tensile forces at its ends! consider a plane through the bar making an angle A with a plane at right angles to the bar. For what values of A is the shearing stress m ...

The mass and radius of a planet are twice that of the earth Then the period of oscillation of a seconds pendulum on that planet will be ans given is √2 sec But i think the ans should be 2 sec only Because it is the only tim ...

a trolley of mass 200 kg moves with a uniform speed of 36 kmhr on a frictionless track. a child of mass 20 kg runs on d trolley from one end to the other (10 m away) with a a speed of 4m/s relative to the trolley in a directi ...

sum1 solve H C Verma part 1 - newton's laws chapter... q . no.39 !!! class 11 be ban giya tha :'( abhi nahi banra.. :'( isse dukh ki baat aur kuchh ho sakti hai ?? :'( ...

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The equation of trajectory of a projectile is given by y = ax - bx2 Find total distance travelled till the body reaches the highest point. ...

What is the energy spent in blowing a soap bubble of radius 7cm? What additional work will be done in furthur blowing it to double radius. Surface tension=30dyne/cm ...

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two shm are represented as y1=10 sin(4pi t + pi/4) and y2=5 sin (3pi t) + √3 cos (3pi t) Their amplitudes are in ratio?? Here are we supposed to do anything with frequencies of phase difference ...

a massive circular hoop of radius r ossilates in its own plane about a horizontal axis at a distance x above the centre of the hoop the period of oscillation is minimum when x equals Please explain how it is suspended ...

Q1. A large open top container of negligible mass and uniform cross-sectional area A has a small hole of cross-sectional area A/100 in its side wall near the bottom. The container is kept on a smooth horizontal floor and cont ...

Can we use centrifugal forces in inertial frame. Could some one help me out with this pseudo force stuff ...

a satellite S is moving in an elliptical orbit around the earth The mass of the satellite is very small compared to mass of earth a)The acceleration of S is always directed towards the centre of earth B) the angular momentum ...

A: If a porter carries a luggage of 30 kg from the waiting room of a railway station to the platform and bring it back to the waiting foom the work done by him is zero R: Workdone is defined as the scalar product of force app ...

please give explanation on 2 and 3 questions of T-327 ...

find freq. of small ossilations ...............everythin else prov. in figure!!!! *Image* ...

An artificial satellite is in circular orbit around the earth. The universal gravitational constant starts increasing at time t = 0, at a constant rate with respect to time. Then the satellite has its 1. path gradually spiral ...

please explain whether it is correct or wrong the amplitude of forced vibration of a body increases with an increase in the frequency of the externally impressed periodic force ...

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a planet takes three years to complete the orbit around sun Its orbit is coplaner with that of the earth What is the time taken by the planet to complete the orbit around sun as seen from the earth Please give the solution ...

*Image* Provide a QUANTITATIVE explanation of this demonstration of Bernoulli principle. ...

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*Image* Find relation between α , ax, ay... ...

standing wave is created by the superposition of of two transverse waves of equal amplitude travelling in opposite directions, in a long string tied at both ends. stat1 : velocity of C.O.M of a piece of length λ (considered ...

A small collar of massm is given an initial velocity of magnitude v0 on the horizontal circular track fabricated from a slender rod.If the coefficient of kinetic friction is μk, determine the distance travelled before the co ...

A rod is floating with half of its length submerged in water. inclined at an angle θ with vertical sinθ=3/4. It is supported by a string on one end. Find: (i) the specific gravity of the rod (ii) now the string is cut. what ...

A cylinder rolls up an inclined plane , reaches some height and then rolled down ( without slipping through out ) directions of friction during upward and downward motions are : I think up the incline while climbing and down ...

consider the attractive central force of the form F(r)=-K/rn K is a constant For a stable circular orbit to exist a)n=2 b)n<3 c)n>3 d)n=-1 Its a ques with more than one ans correct Please explain the ans also ...

A hollow cone of dimensions R,H , is hung vertically , (completely)inside a liquid of density 'p' , its vertex just touching the liquid surface.The force due to the liquid acting on the suface of the cone is kÎ pgHR2 where k ...