Recently Active Mechanics Questions

a cubical box of side L is kept on a cylinder of radius R. what is the largetest value of L for the box to be stable? ...

One end of a carpet is nailed to an inclined wedge. Carpet starts to open by rolling purely on the inclined plane. As the time passes potential energy decreases and increase in kinetic energy results. Where does this energy g ...

a stone is thrown horizontally with velocity of 10 m/s. the radius of curvature at the end of 3 seconds is ??? ...

A particle is moving along x - axis whose acceleration is given by a = 3 x - 4 , where x is the location of the particle. At t = 0, the particle is at rest at x = 4/3. Find the distance travelled by the particle in 5 s. ...

A dumb bell consists of a light rod of length ' r ' and two small masses ' m ' attached to it. The dumb bell stands vertically in the corner formed by two frictionless surfaces. After the bottom end is moved slight towards ri ...

Q. Two particles, one with constant velocity 50m/s and other with uniform acceleration 10m/s2, start moving simultaneously from the same place in the same direction. They will be at a distance of 125m from each other after ho ...

A small drop of water of surface tension ∂ is squeezed between two clean glass plates so that a thin layer of thickness d and area a is formed between them. If the angle of contact is zero , the force required to pull the p ...

can pl smeone tell me a gud way to find consraint relations cz in mst prblms i can figure it out by common sense but there must be a proper "theoretical" way ...

Three blocks A,B,C of equal mass m are placed one over the other on a smooth horizontal ground as shown in fig. coefficient of friction between any two blocks of A,B,C is 1/2. Find the max. value of mass of d so that the bloc ...

*Image* MENTION: I got the answer mgr but by straight forward method only. I tried hard but found no way to solve without integration? If anyone can suggest me something in that area, then please do so.! ...

*Image* The question:- In the arrangement m1=1kg m2= 2kg. Pulleys are massless and strings are light.For wat value of M the mass m1 moves with constant velocity?? A) 6 kg B) 4 Kg C)8 Kg D)10Kg In the 2nd pulley left one is m2 ...

a rod of length l,mass m is hinged at origin and is slightly tilted at angle θ as shown *Image* we expect it to rotate in the clock wise direction but the torque about the orgin due two both halves is same in magnitude =mglc ...

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I have done in rotation a Problem where we put a rotating Disc on horizontal rough platform, find the Average Torque and then solve the equation. Even the ring one is also easier. But How do I do it when there is a square sin ...

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can pl smeone tell me a gud way to find consraint relations cz in mst prblms i can figure it out by common sense but there must be a proper "theoretical" way ...

Can any1 tell me y moon attracts water bodies nd nt humans??..The weight of 1 human is mch less den the weight of water bodies.... ...

"Friction always acts upwards regardless of a spherical body rolling up or down a plane": Is the above statement true?please explain. ...

plese help *Image* ...

Two pendulums with natural frequencies f1 and f2 are released in phase at same instant of time. After what interval will they come in phase again? a) 1/f1 + 1/f2 b) 1/f1 - 1/f2 c) 1/(f1.f2) d) L.C.M of 1/f1 and 1/f2 ...

A flowerpot is knocked off a window ledge from a height d = 20.0 m above the sidewalk. It falls toward an unsuspecting man of height h = 1.75 m who is standing below. Assume the man requires a time interval of t = 0.3 s to re ...

A cubical block of mass m and edge a slides down a rough inclined plane of inclination with a uniform speed. The torque of the normal force acting on the block about its centre is ? ...

A free 238U nucleus kept in atrain emits an alpha particles.When the train is stationary, a nucleus decays and a passenger measures that the separation between the alpha particle and the recoiling nucleus becomes at time t af ...

A body starts sliding (from rest) without friction down a hill of height h. In the beginning the body has potential energy and no kinetic energy; at the end the body has only kinetic energy. It follows from energy conservatio ...

A Block of mass M1 is kept on a Triangular wedge of mass M2 which is again kept on a larger triangular wedge of mass M3.How can we find the net acceleration. All the surfaces are Frictionless. ...

in the geometrical method for solving projectile, how do we calculate the velocity with which the projectile hits the ground....? ...

how to determine the components of mg of a block on an inclined plane...???? wat will be its θ ...? ...

If earth's escape velocity is 25,000 mph, the moon is 250.000 miles away, why did it take 75 hrs to get there? at 25,000 mph it should only take 10 hrs to the moon ...

The mass density per unit area of each circle is " σ " , and all the surfaces are frictionless . It is also given that the radius of each circle is " R " . Find the force required to keep the two bottommost circles together ...

Q: An interstellar explorer discovers a remarkable planet made entirely of an uniform incompressible liquid of density " ρ ". The radius of the planet is " R " and Accn. due to gravity at surface is " g ". What is the pressu ...