Recently Active Mechanics Questions

A thin spherical shell of total mass M and radius R is held fixed. There is a small hole in the shell. A mass m is released from rest at a distance R from the hole along a straight line that passes through the hole and also t ...

An artificial satellite (of mass m) of the earth (radius R and mass M) moves in an orbit whose radius in n times the radius of the earth. Assuming resistance to the motion to be proportional to e square velocity, that is, F=a ...

THE 50 KG HOMOGENOUS SMOOTH SPHERE RESTS ON THE 30 DEGREE IBCLINE A AND AGAINST SMOOTH VERTICAL WALL B.CALCULATE THE NORMAL FORCES AT A AND B. ...

An accelerometer is made of a piece of wire with a bead on it that can slide on the wire with no friction. The wire is formed as a parabola y = kx2. The bead rests at the lowest point of the parabola when it is at rest. When ...

The amplitude of a wave disturbance propogation in the +ve X direction is given by y=1/(1+x^2) at t=0 and by y=1/[1+(x-1)^2] at t=2 sec. The velocity of wave is ...

THE TIME TAKEN BY A BODY TO SLIDE DOWN A ROUGH 45 DEGREE INCLINED PLANE IS TWICE THAT REQUIRED TO SLIDE DOWN A SMOOTH 45 DEGREE INCLINED PLANE.THE COEFFICIENT OF KINETIC FRICTION BETWEEN THE OBJECT AND ROUGH PLANE IS GIVEN BY ...

Plz help me 2 solve it: 1)A carrom board (4ft*4ft) has the queen at the centre.The queen ,hit by the striker moves to the front edge,rebounds & goes in the hole behind the striking line.Find the magnitude of displacement of t ...

*Image* NOTE:INITALLY THE BLOCK AND ROD WAS PERP TO ELECTRIC FIELD and in part (a) I considered the rod to be uncharged and my answer matched with the answer given. ...

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Two piers A and B are located on a river ,one kilometer apart.TWO men must make round trips from pier A to pier B and return . one man is to row a boat at velocity of 4km/ hr relative to the water .and other man is to walk on ...

A particle is fired vertically upwrd with speed 9.8 km/s. Radius of earth=6400km.find maximum height attained by the particle. consider only earth gravitation. ...

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A satellite is orbiting the earth close to the surface...a particle is to be projected from the satellite to just escape from the earth....the escape speed of earth is v....its speed with respect to the satellite will... A> ...

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Calculate the moment of inertia of a cone of Height "h" , Base Radius "r" ,About the central axes .. I know the Result . I WANT THE STEPWISE SOLUTION [Please Give Detailed Steps (if possible)] *Image* ...

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It's pretty well known that physics is my weak point...so I hope people wouldn't mind if I needed help in some basic problems. Besides, this isn't my homework either :P...been there done that LOL. Q1. Three links are hinged t ...

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A particle of mass m is tied to an inextensible massless string of length l whose other end is fixed, is projected vertically up with a velocity u0=√kgl at t=0 such that string being just taut and making an angle 60° with ...

find the ratio of the magnitude of the electric force to the gravitational force acting between two protons ...

Gravel is dropped on to a conveyor belt at the rate of 0.5 kg/s.The extra force required to keep the belt moving at 2 /s is a)1 N b)2 N c)4 N d)5 N e)10 N Please explain the question and answer in detail clearly ...

When one swims across a flowing river,maximum energy is spent in a)first 1/3rd of distance b)second 1/3rd of distance c)last 1/3rd of distance d)equal energy is spent throughout ...

A shell explodes in a region of negligible gravity field giving out fragments of equal mass, then it's total : (a) momentum = that before collision (b) momentum and K.e depend on mass of the fragments (c) K.E is greater than ...

To all folks in TargetIIT , I'm weak in mechanics especially Fluid Mechanics and I don't know even the basic concepts [2] . In the quest for more concepts..I'm posting an analysis of a fluid statics concept regarding Archimed ...

A particle is projected from a horizontal plane(x-z plane) such that its velocity vector at time t is given by V=ai+(b-ct)j . Its range on horizontal plane is a) ba/c b)2ba/c c)3ba/c d)None ...

A boy pushes a cylinder of mass m1 with a help of a plank of mass m2 as shown in the figure .There is no slipping at any contact. The horizontal component of force applied by the man is F . Find a) Acceleration of the plank a ...

why is co-efficient of kinetic friction less than static friction? ...

Consider the infinitely tall system of identical massive cylinders and massless planks shown in Fig. The moment of inertia of the cylinders is I = MR2/2. There are two cylinders at each level, and the number of levels is infi ...

i am posting this question to make the lives of many people easier in mechanics...[1] so the concept of reduced mass goes as follows... there are two types of masses positive mass and negative mass relate to +charge and - cha ...

A sphere of radius ' r ' is projected up and inclined plane for which \mu =\left(\frac{1}{}7 \right)tan\theta with a velocity ' v0 ' and initial angular velocity \omega _{0}(v_{0}>r\omega _{0}). . Prove that friction acts ...