Recently Active Mechanics Questions

a block of mass m is placed on a rough inclined plane which makes an angle @ with the horizontal..if the incline plane is placed in an elevator moving up with a uniform vel v and the block does not move,find the work done by ...

*Image* The spring block system lies on a smooth horizontal surface. The free end of the spring is being pulled towards the right with constant speed v0 = 2m/s.The spring constant is 100 N/m. At t=0, the spring is uns ...

A hoop is placed on a absolutely smooth level surface.a beetle alights on the hoop.what trajectory will be described by the beetle and the centre of the loop if the beetle begins to move along the hoop?the radius of the h ...

A lead ball and a rubber ball having same mass, collide normally with a vertical wall with the same velocityh. The lead ball falls down after striking, but the rubber ball bounces back. Then which of the following is true and ...

A fat hose pipe is held horizontal by a fireman. It delivers water through a constricting nozzle at i liters/ sec. It by increasing the pressure the water is delivered at 2 liter/sec. the fireman now has to a. push forward tw ...

a rope ladder with length `l` carrying a man with mass `m` at its end is attached to the basket of a ballon with a mass `M`.the entire system is in equilibrium in the air.find the work the man should do to ityclimb into the b ...

can anyone explain to me in detail about coriolis forces? ...

two motor cars start from a point A simultaneously and reach at point b after 2hrs. The first car travelled half of the dist. ata speed of 30km/hr & the other half at a speed of 60 km/hr. The second car covers the entire dist ...

A solid sphere is rolling without slipping on the rough ground .it collides elastically with an identical sphere at rest.there is no friction between the two spheres .radius of each sphere is R amd mass is m. Ques: linear vel ...

A ring rotates about its axis z which is perpendicular to its plane of roatation xy. At a certain instant the acceleration of the particle on the ring is {(6)i-(8)j}m/s2. find the angular acceleration of the ring and the angu ...

A long cylinder of radius R is displaced along its axis with constant velocity u inside a stationary co-axial cylinder of radius r.The space between cylinders is filled with viscous liquid.Find the velocity of liquid as a fun ...

what do u mean by space average of velocity?? is there any formula for it??...if yes, plzz tell me... ...

culindrical tank 10 m high has internal diametr 4 work req 2 fill with wit H2O if water pumped in botom edge answer is- 6.15 mJ . HOW CUM I DO W=F*H/2 COS180 H/2 =5 an f=pressure * area area 3.14*4 presuure will b ...

a cylinder of mass 'm' and radius 'r' is rolling widout slipping on a horizontal surface wid angular velocity ω0. the velocity of center of mass of cylinder is ω0r. the cylinder comes across a step of height ...

How 2 find COM of isoceles right angled triangle using integration??pleez reply ...

The figure shows one end of a string pulled down by a constant velocitty V.Assuming the pulleys to be massless and smooth,prove that the tension in string AB is mg(1+b2v2/4gx3) *Image* ...

There are many gud problems in it but many of them are solved by many just like maths... so solve the following question frm it and see urself. Q.A bent tube is lowered into water stream just as shown in fig water has velocit ...

find the time taken by cylinder to reach O from A . ( g=10ms-2) OA =5m. *Image* unable to proceed. ...

The balls, having linear momenta p1 = pˆi and p2 = −pˆi , undergo a collision in free space. There is no external force acting on the balls. Let p'1 and p'2 be their final momenta. The following option(s) ...

*Image* Find the time period of oscillation of the pulley in the system shown. The moment of inertia of the pulley about its axis is I & the string does not slip over the pulley. The string & the springs are light. Pls give t ...

u hve a wedge and u place a block over it at the top.....the block will move down due to the incline of the wedge....now, will the wedge move back as the block comes down..or it will stay at its place....... ***normal is just ...

Two bodies A and B of masses m and 2m respectively are placed on smooth floor.They are connected by a light spring of stiffness k.A third body C of mass m moves with velocity v along line joining A and B collides elastically ...

*Image* The opening near the bottom of the vessel shown in figure has an area A.A disk is held against the opening to keep the liquid from running out.Let F1 be the net force applied on the disc applied by liqiud an air in th ...

A disc of radius R is cut from a disc of radius 2R such that the edge of smaller disc touches the edge of original disc. What will be the centre of mass of left plate. ...

a particle of mass m is moving in a circular path of constant radius r such that its centripetal acceleration 'a' is varying with time as a=k2rt2, whr k is a constant. the power delivered to the particle by the fo ...

a wind power generator converts wind energy to electrical energy. assume that generator converts a fixed fraction of wind energy intercepted by its blades into electrical energy. for wind speed v, the electrical power output ...

Firstly this not a lengthy question can be solved in 2-3 steps. Two towers of Height H and 2H separated by √3H what is the min velocity required to throw the ball from side of short tower so that it just touches small tower ...

a glass tube with mercury trapped in b/w. length of glass tube 100 cm lenthg of mercury in b/w glass tube of length 20 cm(on both side equal air columns at normal condns) take density of mercury =ρ find : a) ht of air co ...

a balloon rises from ground with an accerlation of 1.25m/s2. after 8 s a stone is relased 4rm the baloon.the stone will: a)cover a distance of 40m b)have a displacement of 50m c)reach the ground in 4 sec d)begin to move down ...

a particle has an intial velocity of 9m/s due to east and a const. accerlation of 2m/s2. due to west. the distance coverd by the particle in the 5th second of itz motion???? a)0 b)0.5m c)2m d)none of these ...