Recently Active Mechanics Questions

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Hey can someone pls explain this concept in simple words to me? I came across a formula saying time to empty tank is A/a 2H/g Wher A is area of tank,a is area of hole, H is ht of liquid . Can someone pls explain how this form ...

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A particle of mass 1kg is projected at an angle of 30 degrees with horizontal with a velocity of 40m/s. The change in linear momentum of the particle after a tym t=1s is.... ...

*Image* I THINK BOTH SHOULD BE FALSE...........! ...

*Image* All surfaces are smooth and frictionless. Force constant of spring is k. What is maximum compression of spring when system is released from rest? ...

Q1.A boy is standing in an elevator accelerating upward throws a ball upward with a velocity v.The ball returns in his hands after a time t.The acceleration of the lift is - (a)2v-gt/t (b)2v+gt/t (c)v-gt/t (d)v+gt/t Q2.Two id ...

think of a vertical semicircle(Ω).a square plate is at rest at the lower most position at t=0 n moves as such θ=1.5t2 wer θ is in radian n tym is in sec .a small object p of mass 0.4 kg is temporarly fixed to the plate wid ...

kinetic energy of a particle along a circle of radius r depends on the distance covered as T=ks2 where k is a constant.find the force acting on a particle as a f:n of s a)2k/s*√(1+[s/r]2) b)2ks√(1+[r/s]2) c)2ks√(1+[r/s] ...

IS HCV EBOOK AVAILABLE ON INTERNET.IF YES,PLZ SEND THE LINKS IN THIS THREAD!!!!! THANX ...

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Two uniform solid spheres of equal radii R, but mass M and 4M have a 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 the centre ...

A BOY WEIGHING 200 N CLIMBS UP TO THE TOP OF A VERTICAL LADDER 8.0 m HIGH.FIND THE WORK DONE BY LADDER ON THE BOY AS HE GOES UP. ...

dis is a gud one for juniors (11th)....while i am sure that dos in 12 must have done problems lyk dese...open for all (11th and 12th) theres a rough inclined plane at an inclination of \alpha and a solid disc of radius R and ...

a uniform fine chain of length l is suspended with lower end just touching a horizontal table.find the pressure on the table wen a length x haS Reached d table 1 mgx 2 2mgx' 3 3mgx 4 mgx/2 i m getting 3mgx sum1 plzz check ...

a block a of mass 2 kg rests on a rough horizontal plank ,the coefficient of friction between planck n block =0.2 if planck is puled horizontally with a constant acceleration of 3.96 m/s2 ,the distance moved in metre by block ...

fine particles of a substance are to be stored in a heap on ahorizontly circular plate of radius a if the coefficient of static friction bw particles is k the maximum possible height is A ak B ak/2 C a/k d ak2 ...

a bicycle is in motion .when it is not pedaled the force of friction exerted by ground on the two wheels is such that it acts a)in the backward direction on the front wheel and in the forward direction on the rear wheel b)in ...

*Image* a track consists of two circular parts ABC and CDE of equal radii 100m.a cycle weighing 100 kg together with rider travels at a constant speed of 18km/h on track.what shud be the minimum friction coefficient b/w road ...

A PARTICLE HAS MOVE WITH A CONSTANT SPEED ON A OVERBRIDGE OF RADIUS R AND LENGTH L.WHAT MAXIMUM UNIFORM SPEED CAN IT MAINTAIN IF IT DOES NOT LOSE CONTACT ANYWHERE? ...

A BOX IS PUSHED THRU 4m ACROSS A FLOOR OFFERING 100N RESISTANCE .HOW MUCH WORK IS DONE BY RESISTING FORCE? ...

TWO CYLINDERS OF EQUAL CROSS-SECTIONAL AREA A CONTAIN WATER UPTO HEIGHTS h1 AND h2.THE VESSELS ARE INTERCONNECTED SO THAT THE LEVEL IN THEM BECOME EQUAL.CALCULATE THE WORK DONE BY GRAVITY IN THE PROCESS.(DENSITY OF WATER=p) ...

LET THE MASS OF EACH KID BE 15 KG,DISTANCE BETWEEN THE POINTS OF ROD WHERE THE TWO KIDS HOLD IT BE 3.0 m AND THE ROD ROTATES AT THE RATE OF 20 REVOLUTIONS PER MINUTE.FIND THE FORCE OF FRICTION EXERTED ON THE ROD BY ONE OF KID ...

A stone of mass 100g is suspended from the end of a weightless string of length 1 m & is allowed to swing in a vertical plane.The speed of the mass is 2m/sec.find the speed of the stone at its lowest point...when the string m ...

When a very fat person tries to touch his toes,keeping the legs straight,he generally falls.Explain. ...

how much distance, a mass m kept on the surface of a sphere ,covers before it flies off th sphere.. ...

Two solid bodies rotate about stationary mutually perpendicular intersecting axes with constant angular velocities 3.0rad/s and 4.0rad/s.Find the angular acceleration of one body relative to the other. ...