Recently Active Mechanics Questions

In the arrangement shown in the figure,find the acceleration of M.The pulleys and strings are light! *Image* ...

*Image* will we consider the force due to weight of water at the base ...

ABCD is a track in the vertical plane AB and CD being smooth and concave upwards BC being an inclined plane with μs=0.3 , μk=0.2 and θ=tan-11/4. horizontal dist b/w B and C is 2 metres. if the particle is relea ...

*Image* find the pressure at point P ...

*Image* A liquid of density p is in bucket that spins with angular velocity w (omega). show that the pressure at radial distance 'r' from the axis is P = P° + pw2r2/2 where P° is the atmospheric pressure ...

can one cross a river if velo of river is greater than man's!!!!!!! ...

For the system at rest shown in fig., determine the accelerations of all the loads immediately after the lower thread keeping the system in equilibrium has been cut. Assume that the threads are weightless and inextensible, th ...

3.9 Two towns A and B are connected by a regular bus service with a bus leaving in either direction every T minutes. A man cycling with a speed of 20 km h–1 in the direction A to B notices that a bus goes past him every 18 ...

A thermometer at rest in an ideal gas records a temperature T. The same thermometer when moving with a velocity V in the positive x-direction records a temperature T'. IF m is the mass of the gas molecule, then: a)T=T ...

In a free space the, a rifle of mass M shoots a bullet of mass m at a stationary block of mass M distance D away from it. When the bullet has moved through a distance d towards the block, the centre of mass of the bullet-bloc ...

Two particles of masses m1 and m2 in projectile motion have velocities v1 and v2 where velocities are vectors, at time t=0. They collide at time t, their velocities being v1' and v2' at time 2t. the value of modul ...

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how to calculate workdone by friction for one cyclic process. does this work done does not depends on the internal energy of the system ...

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Can anyone tell me that is there any rule to replace several springs connected (in series or in parallel) having diff. spring const. to a single spring........ *Image* *Image* ...

two small identical discs, each of mass mlie on a smooth horizontal plane. The discs are interconnected by a light non deformed spring of length l and stiffness x. At a certain moment one of the discs is setin motionin a hori ...

A thin rod of length L and mass M is bent at its midpoint into two halves so that the angle between them is 90o. The moment of inertia of the bent rod about an axis passing through the bending point and perpendicular to the p ...

Discuss the various possibilities for differetn ranges of v0 . velocity is parallel to AB case(i) - when it passes from AB to BC smoothly i.e. along the surface . case-(ii) - when it loses contact at B. case(iii)- when it mov ...

A particle moves along a semicircular path of radius R in time t with constant speed. For the particle calculate average acceleration. answer given is : 2Î R/t2 why (2 x avg speed/time) is taken n not (2x avg velocity/time) & ...

A body of mass m is pushed with an initial velocity v up an inclined plane of inclination θ.The co eff. of kinetic friction is μ. Find the work done by friction during the upward motion of the body. ...

*Image* An infinitely stretchable rubber band has one end nailed to a wall, while the other end is pulled away from the wall at the rate of 1 m/s; initially the band is 1 meter long. A bug on the rubber band, initially near t ...

Block A is of mass 30kg & block B is of mass 5kg. if μ kinetic friction between the inclined & block A is 0.2, determine the speed of block A after it moves 1m down the plane, starting from rest. *Image* ...

A block of mass 50kg is released from the position of rest at which the spring is under a tension of 45N. Find the velocity of the block at a position when its displacement is 150mm. *Image* ...

in s.h.m is it necessary that at mean position , potential energy is zero. A cart of mass 2 kg is attached to one end of a horizontal spring with force constant k= 150 N/m. the cart is displaced 15 c.m from its equilibriu ...

please anyone explain this problem three points are located atthe vertices of an equilateral triangle whose is a.They all start moving simultaneously with velocity v constant in modulus,with the first point heading for the se ...

3.18 A police van moving on a highway with a speed of 30 km h–1 fires a bullet at a thief’s car speeding away in the same direction with a speed of 192 km h–1. If the muzzle speed of the bullet is 150 m s–1, with what ...

Example 3.4 A ball is thrown vertically upwards with a velocity of 20 m s–1 from the top of a multistorey building. The height of the point from where the ball is thrown is 25.0 m from the ground. (a) How high will the ball ...

Two bodies of masses M and m (M > m) are attached to the two ends of a light inextensible string passing over a frictionless pulley. The system is held at rest with the string taut and vertical with both masses at a height ...

d periodic tym of vibrations of d simple epndulum at a certain place is 1.6sec and at d poles is 1.2 sec takin d radius of d earth as 6380km m d lenght of d pendulum as 1m find d latitude of d place ...