# Recently Active Mechanics Questions

• The equation of an elliptical orbit of a satellite of mass 2000 kg revolving around the earth is r=(8 X 106)/(1+0.5 cos Î¸). Mass of the earth = 5.97X1024kg. Find. 1. Eccentricity of orbit of satellite 2. Angular mome ...
replied2009-01-04 19:52:23
• A small disc A is placed on an inclined plane forming an angle Î± with the horizontal and is imparted an initial velocity v0.Find how the velocity of the disc depends on the angle Ï† if the friction coefficient k=tanÎ±. a ...
• two blocks A and B of mass M and 2M are connected by a string of length 3L. The block B is released from the position shown. When the string is just taut, the velocities of blocks and impulse tension in the string will be  ...
replied2009-01-04 10:01:09
• Use the figure given to determine 1) distance covered by D when B starts descending 2) velocity of D when A starts moving *Image* ...
replied2009-01-04 04:50:00
• Circular motion.. Do U know where is the lowest point.. a bob is hanging from a string of length l and and a constant acc in horizontal direction is applied.. equal to g.. when string was in vertical position... what min velo ...
replied2009-01-04 03:43:56
• CHECK THIS OUT...... *Image* and let me know the solution.... ...
replied2009-01-04 03:20:02
• AT what height on the poles the value of free fall acceleration decreases by 1%? I m getting two answers using formula g' = g(1-2h/R) then answer comes- 64kms using g' = g/(1+h/R)2 then answer comes 32 kms ...
replied2009-01-03 23:04:38
• The pendullum at teh left is pulled aside to the position as shown is released and allowed to collide with another pendullum which is at rest. What is speed of ball on the left just before collision After collision both stick ...
replied2009-01-03 23:00:10
• A uniform sphere of mass m and radius r rolls without sliding over a horz plane rotating about a horz axle OA.In this process the centre of sphere moves with the velocity v along a circle of radius R.Find kinetic energy of sp ...
replied2009-01-03 22:57:13
• A block slides down a smooth track of height 50cm and then enters into a loop of radius 20cm from which a symmetrical section of 2Î± has been removed.Find angle Î± such that after leaving the circle at A and flying through ai ...
replied2009-01-03 22:05:41
• This is a very easy question in projectile... Everyone can solve it so please solve and give if not the solution but at least the outline of your method... See finally which way it goes.. Q. Air provides 4ms-2 acceleration to ...
replied2009-01-03 21:58:19
• Consider an attractive central force of the form F(r) = -k/rn where k is a constant. For a stable circular orbit to exist what should be the value/values of n? ...
replied2009-01-03 21:54:32
• A ball of mass m slides down a smooth inclined plane which forms a loooop of radius R.At what height it will leave the track and to what max. height it will rise afterwards *Image* ...
replied2009-01-03 19:38:54
• A ball hits fixed horz surface with speed v0 at an angle Î¸o.Coeff of restitution is e.Find ratio of distance moved between 1st and 2nd impact point to that between 2nd and 3rd impact point.Also find max height attained by ba ...
replied2009-01-03 19:32:45
• A block of mass 4kg of height h and breadth b is placed on rough plank of same mass M.A light inextensible string is connected to upper end of block and passed through a light smooth pulley.A mass 1kg is hung to other end of ...
replied2009-01-03 11:16:27
• A uniform spherical shell of mass M rotates about vertical axis on frictionless bearings.A light cord passes around the equator of the shell over a masssless pulley and attached to block(mass m) which is otherwise free to fal ...
replied2009-01-03 11:09:28
• A pendulum bob (mass m)at its mean positon is given velocity v= 7gl/2 .Calculate the height at which it leaves circular path.. Just give the answer first,,,I want to confirm mine... ...
replied2009-01-03 11:06:45
• m1=0.5kg m2=10kg M=8kg.a=10cm,b=15cm.If moment of inertia of spool I=0.1 kg m^2 and friction is sufficient to prevent sliding, calculate accelrations of A and B. *Image* ...
replied2009-01-03 10:33:39
• what is meant by the term `FORWARD ENGLISH` with regard to rotation topic. ...
replied2009-01-03 08:22:30
• Find distance of centre of mass of a uniform plate having inner and outer boundaries as a and b........ *Image* ...
replied2009-01-03 06:54:36
• Inside a smooth spherical shell of radius R a ball of same mass is released from shown posititon.Find distance travelled by centre of shell on hrz floor when ball comes to lowest point on shell *Image* ...
replied2009-01-03 06:42:59
• Block A of mass m rests on plank of mass 3m which is free to slide on smooth horz surface.Î¼ b/w plank and block=0.2 .If horz force applied to plank, find accelration of block relative to plank and ground. *Image* ...
replied2009-01-03 06:30:40
• The tail of a comet is directed away from the sun bcoz: (a) as the comet rotates around the sun the lighter mass of the comet is pushed away due to centrifugal force. (b) AS the comet rotates the lighter mass of the comet is ...
replied2009-01-03 01:38:39
• The block of mass m is stationary wrt block of mass 2m.Calcualte min Î¼ between m and 2m *Image* ...
replied2009-01-02 22:17:40
• Two bodies of mass m and 4m are attached with string.Body of mass m length l(String) is executing oscillation of amplitude Î¸ while other is at rest.The min coeff of friction between 4m and ground should be..... *Image* ...
replied2009-01-02 11:40:05
• two blocks A and B of mass m and 2m are conncected by a massless spring of force constant k.They are placed on smooth horz. plane.Spring is stretched by an amount x and then released.Calculate relative velocities of blocks wh ...
replied2009-01-02 10:42:53
• What is the meaning of Apogee and Perigee??? ...
replied2009-01-01 19:06:44
• A man of 60kg is standing on a horz conveyer belt The belt is having a horz accelration of 1m/s2,the man remains stationary wrt moving belt.If g=10m/s2,the net force on man is ??????? Answer gi ...
replied2009-01-01 18:37:56
• A loop of rope is whirled at a height with angular velocity omega,so that it becomes taut in a circle of radius R.A kink develops in whirling rope.Find the speed of kink in the rope. Under what conditions does the kink remain ...
replied2009-01-01 17:22:37
• A particle of mass 1kg is moving on inner surface of track y=x^2 as it pass es from the point (3/8 ,9/64) with constant speed 2 2 m/s.Find friction force at P and find the normal force by surface (if radius of curvature a ...
replied2009-01-01 11:15:33