Recently Active Mechanics Questions

Plz explain "a swimmer completing one(return) trip from one bank of a river to the other and back " ............ Why is it not periodic? ...

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Q1)A heavy iron bar of weight W is having its one end on the ground and other on the shoulder of a man.The rod makes an angle θ with the horizontal.What is the weight experienced by the man? a)W sinθ b) W cosθ c)W d)W/2 Q2 ...

Two steel balls freely drop onto an elastic plate, the first one from a height of \small \mathit{h}_{1} =44cm and the second from a height \small \mathit{h_{2}} =11cm but after time \small \tau measured from the instant the f ...

Help fellow targetiitians , it seems that a great fellow like me cannot even solve this very naive question: A ball dropped from certain height makes an elastic collission with an inclined plane with angle of inclination = 45 ...

A barometer kept in a stationary elevator reads h cm of Hg column. the air pressure in read barometer when it is accelerating down with an acceleration a is 1. dhg 2. d(g+a)h 3. d(g-a)h 4. NONE ...

*Image* find the time taken when A collides with B. ...

all surfaces are frictionless. three cylinders are placed as shown in the diagram. find the least angle θ that prevents the arrangement from collapsing 1. tan-11/2 2.tan-11/2√3 3.tan-11/3√3 4.tan-11/4√3 *Image* this is ...

All pulleys weigh 1kg each. A,B,C are movable pulleys and D,E are fixed.All strings are light and inextensible.Which of the following statements are correct-- A.The tension in the string in 6.5 N B.accel. of A is g/3 downward ...

maine kaha there r a lot of tough problems on this site lets give u some \lim_{n\rightarrow infinity}(very)^{n} simple problems on mechanics ...

*Image* what will be the maximum force applied m on the rope by the man of mass M standing on a block of mass m as shown so that block does not move , and pulling the rope attached to the block as shown in the arrangement.the ...

*Image* find minimum value of mass M so that 2 kg block slips over 4 kg block . please give complete solved answer. ...

*Image* if all surfaces are frictionless, and the edge of the floor has sufficient friction for the rod to rotate about it, find the minimum distance d for the rod to topple. (length of the rod is l) i am getting d≥(l/2) pl ...

Q1.The force required to just move a body up in the inclined plane is double the force required to just prevent the body from sliding down the plane.The coefficient of friction is u. If @ is the angle of inclination then tan@ ...

When a nucleus at rest emits a beta particle,it is found that the velocities of the recoiling nucleus and the beta particle are not along the straight line.How can this be possible in view of the principle of conservation of ...

a particle moves in the xy plane with velocity v= ai + bxj a and b being constants. at t=0 particle was at (0,0).. find (a) the equation of the particles trajectory (b) the curvature radius as a function of x ...

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What can be said about the CM of a uniform hemisphere without making any calculations ? Will its distance from the centre be more or less than r/2 ? ...

Velocity of CM of two particles is v & the sum of the masses of two particles is m. Kinetic energy of the system : A. will be = 1/2 mv2 B. will be always less then 1/2 mv2 C. will be greater than or equal to 1/2 mv2 D. will a ...

k of spring 200 N/m. Find max. extension of spring-- *Image* ...

Ball 1 collides on with another ball 2 at rest as shown in the figure. For what value of e will the velocity of the 2nd ball be twice that of 1st after collision A.1/3 B.1/2 C.1/4 D.1/6 u1 is not given.. how to do ?? *Image* ...

find the moment of inertia of a uniform square plate of mass "m" and edge "a"...about one of its diagonals? ...

a particle of mass m is give a certain velocity along a plane which is at angle θ to the horizontal. the velocit given is at a angle of β to the horizontal and the coefficitnet of friction is μ>tanθ hence as the partic ...

Two cylinders one heavy and the other light of diameters D and d respectively rest on a horizontal plane. the larger cylinder has a string wound around it to which a horizontal force F is applied. the co-eff. of friction is Î ...

HEY GUYS..............CAN ANYBODY PLEASE GIVE SOME OF THE questions that were asked in bitsat-2009............(ofcourse those who have givn thier examination)..sso that we could get the difficulty level..............seriously ...

An ice-skater, weighing 60 kg moving at 10 m/s glides to a stop. If 80% of the heat generated by friction is absorbed by the ice, the amount of ice melted will be nearly (1) 30 g (2) 14 g (3) 7.1 g (4) 4.1 g ...

There is a cone as shown in the fig. A chain of mass m and length l is placed on it( darkened in fig) The cone is now rotated wid Ang velocity ω. Find the tension in the chain.The half angle of the cone is thita(@ in diagram ...

waht is the realation between T1 and T2 *Image* ...

FIND THE FORCE OF ATTRACTION ON A PARTICLE OF MASS m PLACED AT CENTREA OF A SEMICIRCULAR WIRE OF LENGTH L AND MASS M ...