Recently Active Mechanics Questions

Suppose you drill a narrow tube (with cross sectional area A) from the surface of the earth down to the center. Then line the cylindrical wall of the tube with a frictionless coating. Then fill the tube back up with the dirt ...

Can somebody provide the link for proof of velocity of sound travelling in a medium.( I believe its some experiment.) ...

1.To construct a barometer a tube of length 1m is completely filled with mercury and is inverted in a mercury cup.The barometer reading on a particular day is 76 cm.suppose a i m tube is filled with mercury up to 76 cm and th ...

The tyre is filled with fluid.. pressure at all pts inside the fluid being same, equal force aplied from all sides on the rim of the wheel.. NET FORCE ON THE TYRE RIM IS 0..THEN HOW IS THE WEIGHT OF THE RIM BALANCED ???? SOME ...

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IN THE ARRANGEMENT BELOW ,THE BODIES HAVE MASSES m0, m1, m2 . Friction absent Masses of pulley, and threads are negligible.Find acceleration of the body m1. *Image* plsss. its a simple one ...

Please explain me the concept in this question. Figure shows a small block of mass m kept on the left end of a larger block of mass M and length l. The system can slide on horizontal road. The system is started towards right ...

*Image* A sphere of mass m is placed on a rough plank of mass 2m which in turn is placed on an rough inclined plane, inclined at an angle theta, with horizontal. Friction coefficient between plank and sphere is u2 and that be ...

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*Image* i am confused abt the trajectory of the block..... wht path will it follow..... the block attached with the spring is block A ...

A source S and a detector D are initially at a distance of x=1km. Both start moving towards one another with same acceleration a = 10m/s2. Frequency of source is f = 2000Hz. Find the frequency observed by the detector at time ...

A string 120cm in length sustains a standing wave with the points of the string at which the displacement amplitude is equal to 3.5mm being separated by 15 cm. Find the max. displacement amplitude. By drawing a figure, I got ...

1) The atomic mass of iodine is 127g/mol. A standing wave in iodine vapour at 400K has nodes that are 6.77 cm apart when the frequency is 1000Hz. At this temperature, is iodine vapour mono-atomic or diatomic? ...

Block C has a mass of 50 kg and is confined between two walls by smooth rollers. If the block rests on top of the 40 kg spool, determine the minimum cable force P needed to move the spool. The cable is wrapped around the spoo ...

a train A runs from east to west and another train B of the same mass runs from west to east at the same speed along the equator. A presses the track with a force F1 and B presses the track with a force F2, then (a) F1>F2 ...

*Image* Explain the concept , little bit of hint shoud be sufficient. ...

A dog of mass m is standing on the edge of a stationary horizontal turntable of totational inertia I and radius R. The dog walks once around the circumference of the turntable. What fraction of a full circle does the dog's mo ...

1) A body of mass M is kept on a rough horizontal surface(friction coefficient=μ). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the surface on a body is F where- ...

This is a pretty easy one....but I need some help. Initially the system of masses is held motionless. All surfaces, and pulley are frictionless. At the instant after the system of objects is released, find the accelerations o ...

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find the moment of inertia of a cylinder of mass M, radius R and length L about an axis passing through its centre and perpendicular to its symmetry axis. Do this by integrating an elemental disc along the length of the cylin ...

Q. if 3 particles A,B,C of equal mass are located at the vertices of an equilateral triangle ABC,and at same instant all start moving with speed v ,such that at any instant velocity of A is always directed towards B;vel of B ...

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plz explain me abot toppling and wat are the conditions required for toppling of a body with sliding and sliding then toppling..... ...

The free end of a flexible rope of Length L and mass λ per unit length is released from the rest in the position as shown in the figure (A). Determine the velocity V of the moving portion of the rope in terms of y. *Image* ...

Prove that the fractional loss in the kinetic energy of an incident neutron in a head on collision with an Atomic nucleus , initially at rest is 4A/(A+1)2. A being the Atomic No. ...

A cylinder of mass M is suspended through two strings wrapped around it . Another cylinder B of mass m is connected by a masless string that is wrapped around the cylinders in opposite directions . During the fall the strings ...

A particle of mass m is attached to one end of a light elastic string of natural length a and force constant mg/a. The other end of the string is attached to a fixed point X. If the particle is released from rest at X, find t ...

IF ENERGY OF A PARTICLE IS 'U' AT THE ORIGIN ..AND the object's movement is restricted along the X axis only ..such that U= Log |1+e2x| J DERIVE THE CONDITION FOR FOLLOWING TYPES OF EQUILIBRIUM : 1) stable 2) unstable 3) neut ...