Recently Active Mechanics Questions

a particle located at x=0 and t=0 starts moving along a positive x axis with a veolcity v such that v=a x/sqrt] whare A is a constant q.1 HOW DOES THE VELOCITY VARY WITH TIME? Q.2 WHAT IS THE AVERAGE VELOCITY OF THE PARTICLE ...

in which case is friction impulsive???? *Image* ...

A chain of mass m and radius r placed on a smooth table revolving with speed v revolving about a vertical axis coinciding with symmetry axis of chain.Find tension in chain ...

Find ratio of magnitude of angular momentum of rolling disc about origin to point P on disc *Image* ...

A man pushes a cylinder of mass m1 with the help of a plank m2 as shown in the figure. there is no slipping at any contact. *Image* the horizontal component of the force applied by the man is F. a ) Find the acceleration of p ...

stat1;if the atmospheree air suddenly condenses n form a thin layer on the surface of earththe duration of day ll increase stat2;moment of inertia of earth ll increase n thus angular speed ll decrease ...

in a gravity free space a man of mass M standing at a height h above the floor throws a ball of mass m straight down witb a speed u. when the ball reaches the floor , the distance of the man above the floor will be- a)h(1+m/M ...

A block of mass 1kg is pushed against a rough vertical wall with a force of 20N, coefficient of static friction being 0.25. Another horizontal force of 10N is applied on the block in a direction parallel to the wall. Will the ...

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wat is the difference between decelaration and retardation? or, are they the same thing? ...

a syringe of diameter D=8mm and having a nozzle of diameter d=2 mm is placed horizontally at a height of 1.25m as shown in the figure. An incompressible and non viscous liquid is filled in syringe and the piston is moved at s ...

Two point masses m1 and m2 are coupled by a spring of spring constant k and uncompressed length L0. The spring is fully compressed and a thread ties the masses together with negligible speration between them. the tied assembl ...

disc rolls clockwise with angular speed w suddenly contacts a plane inclined at an angle a The value of a which could bring the disc immideately to rest on impact is Please solve the ques ...

the frictional force on the point of contact of a disc rolling perfectly down an inclined plane is zero Tell whether the statement is correct or wrong ...

A 10 cm column of air is trapped by a 8 cm column of Hg in a capillary tube.....the tube is horizontallly fixed as shown in the figure at 1 atm pressure. Calculate the length of air column when the tube is fixed: *Image* (a) ...

a rod of weight, w is supportd by two parallel knife edges A and B and is in equilibrium in a horizontal position. the knives are at a distance of d from each other. the centre of mass of the rod is at a distance x from A. th ...

a hole is dug along the centre of the earth along the diameter, and a body of mass m is dropped in the tunnel, calculate the velocity of body at the centre of the earth , given that gravitaional potential at the centre of the ...

assertion n reason statement 1 ;acceleration due to gravity gos on decreasing as we goes frm equqtor to pole statement 2:a part of weight is used to provide the centripetal force for rotating the body abt n-s axis of earth ...

consider a body projected in horizontal direction at certain heightwith velocity v 1trajectories possiblity a)circular p)total mech energy<0 b)ellipse (not a circle) q)v=v0 (c)parabola r)v<vo (d)hyperbola s) v>ve t)v ...

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a metre bridge is used to determine d resistance of an unknown wire by measuring d balance point L.if d wire is replaced by another wire of same material with double d length n half d thickness d balancin point is expected to ...

A:Work done by the engine of the car is equal to the change in its K.E. B:Internal forces can increase the K.E. of the system (i)Both true,B is the correct explanation of A (ii)Both true B is not the correct explanation of A ...

A small light pulley is attached with a block C of mass 4kg as shown. A block of mass 1.5kg is placed on the top horizontal surface of C. Another block A of mass 2 kg is hanging from a string, attached with B and passing over ...

two particles are projected simultaneously in the same vertical plane, from the same point, but with different speeds and at different angles to the horizontal. find the path follwed by one, as seen by the other.... ?? a) a v ...

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*Image* a uniform bar of length L stands vertically touching a wall OA, when slightly displaced, its lower end begins to slide along the floor . obtain an expression for the angular velocity ω of the bar as a function of θ ...

. Upthrust is independent of A. shape of the body 2. Specific volume is independent of B. size of the body 3. Specific resistance is independent of C. mass of the body 4. Heat capacity is independent of D. material of the bod ...

a uniform thin rod of mass m and length l is standing on a smooth horizontal surface. A slight disturbance causes the lower end to slip on the smooth surface and the rod starts falling. find the velocity of centre of mass of ...

the potential energy of a particle executing S.H.M along the x- axis is given by U = U1 - U1 cos(ax). wat is the period of oscillation ?????????????????????????????????????????????????? ...

two masses m1 and m2 are suspended together by masslesss spring of spring constant k. when masses are in equilibrium, m1 is removed without disturbing the system find maximum velocity of m2 during oscillation ...