# Recently Active Mechanics Questions

• *Image* Consider a mass ' m ' rotating about the given axis with angular velocity ' Ï‰ '. Find the acceleration and Pseudo Force of the block as seen from the MID POINT of the string. Assume the length of string as ' L '. ...
replied2012-01-26 10:25:27
• *Image* ...
replied2012-01-20 10:37:46
• How to find the centre of mass of an L shaped lamina formed by 3 squares of different masses? ...
replied2012-01-05 20:26:58
• Two uniform solid spheres of equal radii R, but mass M and 4M have a centre to centre seperation 6R.The two spheres are held fixed.A projectile of mass m is projected from the surface of the sphere of mass M directly towards ...
replied2012-01-05 07:11:50
• *Image* in the given figure find the velocity of the cylinder. assume the cylinder remains in touch with the wedges. all surfaces are frictionless. ...
replied2011-12-26 04:07:03
• suppose a spring mass system is completely immersed in a liquid . If we give small displacement x to it then will boyant force be considered as restoring force along with -kx or not? ...
replied2011-12-20 21:47:00
• A particle of mass m moves in xy plane along the line y=x-4,with constant velocity v. find the angular momentum of the particle about origin at any instant of time t.. ...
replied2011-12-15 02:15:57
• When a particle is flying from the ground slowly upward against gravity. Since the kinetic energy is zero throughout the process what is bringing the change in potential energy? ...
replied2011-12-13 11:24:31
• well theres this question...in which i find that theres a small language error...kindly help HC VERMA PART ONE CHAPTER 12 EXERCISES Q 11 A block of mass 0.5 kg hanging from a vertical spring executes simple harmonic motion of ...
replied2011-12-13 11:00:39
• *Image* mass of rod = 30 kg length = 0.8 m is free to rotate about horizontal axis 'O' passing through its centre. a particle p of mass = 11.2 kg falls vertically through a height h = 36/245 m and collides elastically with th ...
replied2011-12-09 06:21:01
• initially the system is held at rest nd spring is in natural length. friction between disc nd ground is sufficient to prevent slipping. now system is released frm rest position. 1) the min. coeff. of friction reqd. to prevent ...
• 1. A space vehicle of mass m is in a circular orbit of radius 2Re about the earth (mass me). What is the work done by an external agent to transfer it to an orbit of radius 4Re? 2. Three stars each of mass M and radius R are ...
replied2011-12-07 08:27:07
• I was reading Mechanics where it was said that, Particle is a hypothetical mass-point that has no size. Can you please explain clearly... ...
replied2011-12-05 21:41:56
• The heart of a man pumps 4 liters of blood per minute at pressure of 130 mm of mercury. If the density of mercury is 13.6 g/cm3 then calculate the power of heart. (g=9.8m/s2) ...
replied2011-12-04 10:20:54
• Two projectile are fired frm surface at a angle of 30 degree and 60 degree respectively with the horizontal...path of the first as seen by the other is a) parabola b)ellipse c)st line d)none ...
replied2011-12-04 10:19:49
• *Image* Find the velocity of point C on string. ...
replied2011-12-04 04:31:34
• *Image* What is the time period of small horizontal oscillation of the given block? ...
replied2011-12-01 22:04:01
• This is a part of my initiative - Not A Doubt : A snowball is thrown against a wall . Where does its momentum go ? Where does its energy go ? Explain clearly . ...
replied2011-11-29 22:09:14
• 1. A stone is dropped from top of a tower. When it crosses a point 5 m below the top , another stone is dropped from a point 25 m below the top. Both stones reach the bottom of the tower simultaneously. Find the height of the ...
replied2011-11-29 21:49:54
• A typhoon originates in the Indian Ocean. Satellite imaging shows that the distance travelled by it are 105 and 95 kms in the first 2 hours after it originated. It is dangerous at speeds above 50 km/hr. Find the time for the ...
replied2011-11-28 05:24:39
• 1. A projectile is fired at an angle 60â—¦ with some velocity u. If the angle is changed infinitesimally, let the corresponding fractional changes in the range and the time of flight be x and y, respectively, Then y is (A) 2/ ...
replied2011-11-27 23:03:09
• How to find the intensity at any point on the axis of the ring? Please explain. ...
replied2011-11-24 20:38:27
• A stone is projected from the ground so as to hit a bird on the top of a vertical pole of height h and then attain a maximum height 2h above the ground.if at the instant of projection the bird flies away horizontally with a u ...
replied2011-11-18 03:36:27
• *Image* *Image* Some help will be appreciated. I just know that conservation of string follows here. But relating velocities troubling me. P.S Don't panic that it is copied from some very hi fi book. It can be found in any Fi ...
replied2011-11-10 04:24:02
• A satellite revolves round the Earth. Air pressure inside the satellite is maintained at 76 cm of mercury. What will be the height of the mercury column in a barometer tube in 1m long placed in the satellite? ...
replied2011-11-07 10:14:09
• Consider the Setup Shown, If the L - Shaped object is deflected slightly it oscillates. Find he frequency of the same. *Image* ...
replied2011-11-05 09:41:17
• COnsider a normal pendulum. It is moving under gravity. It has a hollow bob. water leaks out of the bob at a constant rate so . How will T be affected the right answer is that time period will increase and then decreaseMy ans ...
replied2011-10-29 07:53:55
• day after 2morrow is my kvpy exam. non-programmable calculators are allowed for the kvpy exam. will i b able to use my casio fx-991ES calculator??? ...
replied2011-10-28 08:51:47
• *Image* a rod of length l is resting on a horizontal floor.at a certain instant of time,lower end has a velocity of 3m/s what is the minimum velocity of of the upper end of the rod? ...
replied2011-10-27 05:46:22
• what is the tension of the rope that connects the two blocks of masses M & m. given that the co-efficient of friction between the surface and each of the block is Î¼ *Image* ...
replied2011-10-26 09:48:35