Recently Active Mechanics Questions

A spherical tank of 1.2m radius is half filled with oil of relative density 0.8. If the tank is given a horizontal acceleration of 10 m/s2. Calculate the maximum pressure on the tank. ...

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find the min. velocity with which an object must be projected horizontally so that it doesen't returns back to the surface acc to this link{ques c]}, ans shud be root [gr] http://www.targetiit.com/iit-jee-forum/posts/interest ...

What is the significance of negative work done? ...

A block is kept on the floor of an elevator at rest. The elevator starts descending with an acceleration of 12m/s2. The displacement of the block during the first 0.2 s after the start assuming g = 10 m/s2 is (a) 4 cm (b) 20 ...

I C or Instantaneous Centre of Rotation It is a simple theory to make problems of specific type easier......... if wisely used..... It states When a body is moving on horizontal floor with pure rolling, then it is as good as ...

Actually I was reading Friction and in Rotation also I came across this term 'slipping'.Though I know the general meaning of slipping but I dont understand how it works.Like how is friction related to slipping and how is slip ...

A light rigid rod is placed on a smooth horizontal surface. Initially the end A begins to move vertically upward with constant velocity v and centre of the rod upward with a velocity v/2 having downward acceleration a/2. The ...

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As Subhomoy promised me he would help me with rotation.So I am starting a new thread to get my concepts clear with some help from Subhomoy Bakshi. Hope it helps all. Go ahead subhomoy. ...

In IIT 2011, There was a question of Harmonic motion motion where and E is applied in right direction for the positively charged block. Now, There the frequency did not change and only mean position changed. However when the ...

Particles P and Q of mass 20gm and 40 gm respectively are simultaneously projected from points A and B on the ground.The initial velocities of P and Q make 45° and 135° angles with points A and B on the ground.Each particle ...

If for a system of N particles of different masses m1, m2....mN with PVs r1, r2.....rN and corresponding velocities v1, v2...vN such that Σvi = 0, then 1) The total momentum must be 0. 2) The total angular momentum must be i ...

*Image* agreed with the equations, except one , that is N = 2 they have given that force applied by stick on the ring is 2 N, that means ( N2 + (μN)2 )1/2 = 2 but with this i didnt get an integral answer. so i tried with N = ...

1. The displacement y of a particle executing periodic motion is given by y = 4 cos2(t/2) sin (1000t). The above expression may be considered to be a result of superposition of how many waves? A) 2 B) 3 C) 4 D) 5 2. A functio ...

A body A weighin 22N is positioned on the end of a slender horizontal plank fixed at one end (mass of the plank is negligible). A force (vertically downwards) on A causes a deflection of 12.5mm. The natural angular frequency ...

*Image* The figure shows two blocks in contact sliding down an inclined surface of inclination 30°. The friction coefficient between the block of mass 2kg and the incline is μ1, and that between the block of mass 4kg and th ...

Are damped oscillations periodic? ...

*Image* In the given figure, the spring has spring constant k . The pulley is light and smooth , the spring and the string are light. The suspended block has a mass m. If the block is slightly displaced from its equilibrium p ...

a transverse wave is described by the equation A sin2(wt - kx ). the maximum particle velocity is equal to wave velocity if the value of A is ...

y=Acos(wt-kx) y=Asin(wt+kx) Can they form stationary waves? I say yes. My book says no. Need a confirmation. ...

A wire is bent in form of as shown in the fig. It is suspended from the pt. where curved portion starts ( curved portion is semicircular) .Find the value of a in terms of r such that the straight portion remains horizontal. * ...

The bob of a simple pendulum is a hollow sphere filled with water . how will the period of oscillation change if the water begins to drain out of the hollow sphere ? ...

what is the frequency of the K.E of a body in S.H.M if the time period of S.H.M is T ? ...

A helicopter can hover when the power output of its engine is " P " . A second helicopter is an exact copy of the first one, but its linear dimensions are half those of the original. What power output is needed to enable this ...

in a simple pendulum the breaking strength of the string is double the weight of the bob. the bob is released from rest when string is horizontal. if the sting breaks when it makes an angle ∞ with the vertical. then find ∠...

in a simple pendulum the breaking strength of the string is double the weight of the bob. the bob is released from rest when string is horizontal. if the sting breaks when it makes an angle ∞ with the vertical. then find ∠...

A ball is bouncing vertically up and down. It has a velocity v0 when it strikes the ground. The acceleration due to gravity is slowly reduced by 10% during a very long interval of time. Assuming no air resistance and perfectl ...

Two blocks A and B are attached to a spring of force constant K and are placed on a horizontal surface. The coefficient of friction between block A and surface is zero while between block B and surface is μ. A spherical ball ...

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