Recently Active Mechanics Questions

A particle is confined to rotate in a circular path with decresing linear speed.Then,which of the following is correct? (A)L vector(angular momentum) is conserved about the centre (B)only direction of angular momentum is cons ...

Suppose a mass 'm' sticks to a rotating disc of mass M and radius R. I wanted to whether new I = (M+m)R2/2 or (MR2/2 + mR2) If second is correct then please give me an example in which first one is used. ...

1)actually this ques is a tatoo ques :P::D ....i just wanted to confirm my answer thts why possting draw fbd *Image* *Image* ...

An artificial satellite of mass m of a planet of mass M, revolves in a circular orbit whose radius is n times the radius R of the planet. In the process of motion, the satellite experiences a slight resistance due to cosmic d ...

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A cylindrical solid of mass 10-2 kg and cross sectional area 10-4 m2 ismoving parallel to its axis (the x- axis) with a uniform speed of 103 m/s in the +ve direcn . At t=0 , its front face passes the plane x = 0 . The region ...

The potential energy of a force field is given by U(x,y) = sin(x+y) . The force acting on the particle of mass m at (0,pi/4) is: (A) 1 (B) root 2 (C) 1/root 2 (D) zero i m usin F = -dU/dr .............but after that what shud ...

Let V and E denote Gravitational Potential and Gravitational field at a point. Is it possible to have V=0 but E≠0 ? ...

*Image* An circular Iron rod of radius r is put into an inverted cone which rotates with an angular velocity 'w'. If the mass of the ring me M find the tension in the the Iron rod if it rotates with the the cone without slidi ...

a ball is thrown upwards from the surface of earth . while the ball is moving up, (a) the earth remains stationary while the ball moves upwards (b) the ball remains remain stationary while the earth moves downwards (c) the ba ...

A rod of mass m, length l is hinged at a distance x from the top.A force F is apllied at the bottom.Find x such that hinge reaction is 0. ...

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A particle of mass 2gm is resting at the origin.A constant force at t=0 produces an acceleration of 2m/s2 .The line of motion of the particle makes an angle of 300with the x-axis.The work done by the force in the time interva ...

well first of all a short introduction to this man.... Ravish Bhaiya is the new physics teacher in Edudigm....in my life i have never seen a person with such a great command over the subject as him... one question he gave to ...

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Two men A and B of masses M and M+m respectively start simultaneously from the ground and climb with uniform acceleration up the free ends of massless inextensible rope which passes over a smooth pulley at a height h from the ...

A ball swings in a vertical circle at the end of a rope 1.5 m long. when the ball is 36.9° past the lowest point on its way up, its total acceleration is =( -22.5 i + 20.2 j).at that instant find the magnitude of radial acce ...

looks like i am a genius in finding errors two silts are sep by 0.32mm .A beam of 500nm strinkes the solts producing an interference pattern . Determine the interference pattern between angular range -30egreees<0<30degr ...

What is the pressure at the bottom of a capillary tube dipped in a liquid? is it hρg + 2T/R or hρg - 2T/R? One more thing, this 2T/R is the excess pressure due to what?? at the bottom there is no bubble or droplet. What abo ...

A bead can slide on a smooth straight wire and particle of mass m is attached to the bead by a light string of length L. The particle is held in contact with the wire with the string taut and is then let fall. If the bead has ...

1.. Two particles are thrown from a certain height along horizontal direction mutually opposite to each other with velocities v1 and v2.find the distance b/w the particles when their velocity vector becomes mutually perpendic ...

1) The time period of a particle in SHM is equal to the smallest time between the particle acquiring a particular velocity v. The value of v is (a) vmax (b) 0 (c) between 0 and vmax (i think this value can be anything) 2) Two ...

!. A spherical ball of mass m is kept at the highest pt. in the space b/w 2 fixed , concentric spheres A and B ( see fig. ) . The smaller sphere A has a radius R and the space b/w 2 spheres has a width d. The ball has a diame ...

1.. 2 boats A and B move away from buoy anchored @ the middle of the river along mutually perpendicular straight lines,the boat A along the river and the boat B across the river. Having moved off an equal distance from the bu ...

A man travelling in a fast moving train watches the nearby objects moving in the opposite direction, but the distant objects appear to be stationary. WHY??? ...

can anybody plzz help me in these typo questions... 1)a police jeep is chasing a culprit going on a motorbike. the motorbike crossess a turning at a speed of 20m/s the jeep follows it at a speed of 25m/s ,crossing the turning ...

A thin uniform metallic rod of length 0.5 m and radius 0.1 m rotates with an angular velocity 400rad/s in a horizontal plane about a vertical axis passing through one of its ends. Calculate the tension in the rod as a fucntio ...