Recently Active Mechanics Questions

While walking on the ice we take short steps.....as short steps provides:- a)Larger Friction b)Smaller Friction c)Larger Normal force d) Smaller Normal Force ...

*Image* find acceleration of blocks. pulleys are light & frictionless, strings are light and inextensible ...

two rods of equal length, Rod-1 along X-axis and Rod-2 along the Y-axis are placed in such a way that the mid points of the two rods are at the origin and the mid points are welded at the mid point. the rod-1 move with a velo ...

the pressure gauge has a spring of k=60 N/m and area of the piston is .5cm2. Its right end is connected to a closed container of gas at gauge pressure of 30 kPa. how far will the spring be compressed if the region containing ...

*Image* a particle is released from the top of an equilateral triangle groove which is meeting in th plane of an inclined plane of inclination theta= 53°. the corner of the groove are curved to neglect impulse. side of a tri ...

three equal weights A,B,C each of mass m are hanging on a string passing over a fixed pulley. the tension of the string between B & C is???? *Image* ...

A thin rod is held resting on the ground with its length inclined at an angle φ to the horizontal.The coefficient of friction between rod and ground is K.Show that when the rod is let go it will start slipping on the ground ...

a particle is projectedwith a velocity of "u" frm a point at a ground level.show that at cant clear a wal of "H" AT A DISTANCE "X" FRNM THE POINT OF PROJECTION IF u2< g {h+ √(h2 +x2)} ...

find the result of the sum of the following sin3x+ sin33x2 + .........∞ 32 ...

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*Image* Two rods of length 'L' are connected as shown in figure.the rods rotate about the two hinges and are connected by a third hinge The angular velocity of the horizontal rod is ω find the angular velocity of the vertica ...

Two balls at height H1 and H2 are thrown with velocity V. they are having same mass and charge. the ball with height H1 falls at a distance L from the initial height. find the height of the second ball at the instant when the ...

a pendulum of mass m and length L is pulled back an angle θ and released. After the pendulum swings through its lowest point, it encounters a peg α degrees out and r meters from the top of the string. The mass swings up abo ...

can somebody explain or give link to study polar cordinates as it is useful to find velocit etc. suppose a rod is leaning against the wall with the rod beimg almost vertical then find the angle at which it shall leave contact ...

1) a shell of mass m is fired from a gun of mass km which can recoil freely on a horizontal plane , the elavation of the gun is 45° .prove that the ratio of energy of the shell to that of the gun is (2k2+2k+1)/k . [ im getti ...

if three identical particles are placed on the vertices of an equilateral triangle...will the grav field at the centroid of the triangle be zero??.....i guess the answer is a big NO...bt sumwhr i read that its zero....just wa ...

A particle is suspended vertically from a point O by an inextensible massless string of length L. A vertical line AB is at a distance L/8 from O as shown in figure. The object is given a horizontal velocity u. At some point , ...

*Image* Two identical ladders ,each of mass M and length L are resting on the rough horizontal surface as shown in figure. A block of mass m hangs from P . If the system is in equilibrium , find the magnitude and direction of ...

The potential energy of a 1 kg particle free to move along X-axis is given by U(x)=( x4/4 - x2/2 ) J.The total mechanical energy of the particle is 2 J. Then the maximum speed (in m/s) is p/√q . Find out p + q. I got 2 answ ...

A plank of mass 'M' is placed on a smooth surface and a cylinder of mass 'm' and radius 'R' placed over the plank. now there is a horizontal force 'F' acting on the plank towards right. if the cylinder does not slip over the ...

Displacement of a particle in one dimension under action of a constant force is related to time t by eq. t= x +3 where x is in m and t in sec. a> Find the displacement of a particle when its velocity is 0. ...

a balloon of mass m is found to accelerate up at the rate of g/6. the quantity of water that should be put inside the balloon so that it may accelerate downwards at the rate of g/6 is: ...

a uniform disc of radius R is first spinned to ang velocity 'w'. and the placed with its flat face on the horizontal surface. how long will the disc be rotating if the friction coeff = 'u'. ...

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A particle moves along the x - axis according to the law x = a cos ωt. Find the distance that the particle covers during time interval from t = 0 to t = t. HELP! ...

a circular hole of radius r/2 is cut from a solid sphere of radius r. if the mass of the remaining plate is M ten what is the moment of inertia about an axis through the centre of original sphere, parallel to the hole? ...

A projectile is projected at an angle 60 degrees with the horizontal with velocity 10m/sec from the bottom of the inclined plane.Find the angle of inclination of plane(alpa) such that direction of motion for the particle is a ...

Q. Determine horizontal velocity with which a stone must be projected horizontally from a point P, so that it may hit the inclined plane perpendicularly. The inclination of the plane is θ and point P is at height 'h' above t ...

Bullets are being fired vertically up from a gun with an initial speed of 20m/s at an interval of 1 second. Find the number of bullets the 7th bullet will meet in its path. [Ans. is 4 bullet while going upwards and 4 bullets ...

Q: A satellite orbiting the earth at a height ' r ' from the surface with velocity ' v ', starts losing energy at a constant rate of " C ". Find the time taken by the satellite to reach the surface of earth. Take Me as Mass o ...