Recently Active Mechanics Questions

A uniform ladder of mass 10 kg leans against a smooth vertical wall making an angle of 53° with it. The other end rests on a rough horizontal floor. Find the normal force and the frictional force that the floor exerts on the ...

*Image* A thin horizontal disc of radius R=10 cm is located within the cylindrical cavity filled with oil whose viscosity is ∩ =0.08P. the clearance between the disc and horz. planes of the cavity is equal to h=1.0mm.Find t ...

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hey guys can u help and tell how the differential equation has been solved here *Image* i mean can u say how they have eliminated time ? thanks [1] ...

Yesterday Philip was frustrated at the lack of gud problems...I am posting some for everyones practice..........2009 aspirants should solve them and put up solutions here for 2010 students to learn............. Some might be ...

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Velocity of a particle, which starts moving from origin in x-y plane is given by v=a i+bx j where a and b are positive constants. Path followed by the particle is a>st. line b>circle c>ellipse d>parabola ...

there is a ellipse which is rotated about the axis to form an egg-like structure......a quarter of the egg is cut. We have to find out the centre of mass of the one-fourth egg...... ...

A particle is restricted to move on x-axis. The particle must be moving towards origin if, A) x\frac{dx}{dt}}<0 B) x\frac{d^{2}x}{dt^{2}}<0 C) (\frac{dx}{dt})(\frac{d^{2}x}{dt^{2}})<0 D) x^{2}\frac{dx}{dt}<0 ...

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*Image* when the block moves on the horizontal block then work done against friction is W3... now when the block is moving on the left inclined plane, work done against friction is W1....similarly when it moves on the right i ...

Find time period of rod in both cases 1) *Image* Rod is hinged about centre...Distance a,b are measured from COM and c distance from point where string is tied 2) *Image* Rod is free to move,The strings are at extremes of rod ...

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a block of wood floats in a bucket of water placed in a lift. Will the block sink more or less if the lift ... A)starts acclerating up B)moves up with a constant velocity.......please explain your answer...... ...

*Image* The 50 kg homogenous smooth rests on the 30° incline and bear against the smooth vertical wall B. Find contact force at A? ...

A cage of 1.5 kg carries a bird of 2.5 kg inside it.when the bird starts flying in the cage the weight of the bird cage assembly is? a)4 kg b)1.5 kg c)2.5 kg d)2 kg ...

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1)3 particles of equal mass M are moving on a circular path with radius r under their mutual gravitational attraction.the speed of each particle is: a)√(GM/√2R) b)√(GM/√3R) c)√(GM/2R) d)√(GM/3R) 2)in a double star ...

*Image* a needle has been placed in each end of a broomstick,the tips of needles resting on the edges of a filled wine glass. the experimenter strikes the broomstick a swift blow with a stout rod .the broomstick breaks and fa ...

In an unconstrained elastic collision between two smooth balls moving along x-axis, velocity of the lighter ball changes from \vec{v} 1(before the collision) to \vec{v} 2 ( after collision). If \vec{v} is the velocity of cent ...

*Image* 1) A spring is resting inside a tumbler of liquid of density ρ..and a mass m of densityy d is just placed on the spring so that there is no expansion...as shown in the figure... now the mass is slowly descended into ...

A thin rod of length L is lying along the x - axis with its ends at x=0 and x= L . Its linear density (mass/length) varies with x as k(x/l)n where n can be zero or any positive number. If the position xCM of the centre of mas ...

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A spherical ball of radius R, is floating in liquid with the half of its volume submerged in liquid. Now the ball is displaced vertically by small distance inside the liquid. Find the frequency of oscillation of ball. (A) π/ ...

1....UNIFORM ROD OF LENGTH L AND MASS M..IT IS FREE TO ROTATE IN A HORIZONTAL PLANE ABOUT A VERTICAL AXIS THROUGH ITS ONE END..IN EQUILIBRIUM IT IS PARALLEL TO WALL.. (A)WHAT IS THE PERIOD OF SMALL OSCILLATION THAT RESULT WHE ...

Q1 Keplers laws dont always hold true for sattelite motion .Why ? a)Interactions between planets and the sun are diff fro mthose b/w the planets and the satellites b)His laws were for elliptical orbits and satellite motion ma ...

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Q1) Figure shows a weigh bridge, with a beaker P with water on one pan and a balancing weight R on the other. A solid ball Q is hanging with a thread outside water. It has volume 40cm3 and weighs 80gms. If this ball is to be ...

1) A:beta particles emmited from radioactive nuclei has a continuous energy ranging from zero to a certain amx value R:in beta decay,a aneutron si converted into a proton,an electron and an antineutrino.The total energy emmit ...