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A thick rope of density p and length L is hung from a rigid support. The Young's modulus of the material of rope is Y. The in crease in length of the rope due to it sown weigh tis
The correct answer is:
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Physics-
Copper of fixed volume 'V; is drawn into wire of length 'l'. When this wire is subjected to a constant force 'F', the extension produced in the wire is '
'. Which of the following graphs is a straight line?
Copper of fixed volume 'V; is drawn into wire of length 'l'. When this wire is subjected to a constant force 'F', the extension produced in the wire is ''. Which of the following graphs is a straight line?
Physics-General
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The change in the value of 'g'at a height 'h' a bove the surface of the earth is the same as at a depth 'd' below the surface of earth. When both 'd' and 'h' are much smallerthantheradiusofearth,thenwhichoneofthefollowingiscorrect?
The change in the value of 'g'at a height 'h' a bove the surface of the earth is the same as at a depth 'd' below the surface of earth. When both 'd' and 'h' are much smallerthantheradiusofearth,thenwhichoneofthefollowingiscorrect?
Physics-General
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The moment of inertia of a uniform semicircular wire of mass mand radiusr, about an ax is passing through it scent re of
mass and perpendicular to its plane is mr2
Find the value of k.
The moment of inertia of a uniform semicircular wire of mass mand radiusr, about an ax is passing through it scent re of
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Physics-General
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A couple produces
A couple produces
Physics-General
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A3kg balls trikes a heavy rigid wall with a speed of 10m/s at an angle of 60°.It get s reflected withthesamespeedandangleasshownhere.Iftheballisincontactwiththewallfor0.20s,whatis the average for ce exerted on the ball by the wall?
A3kg balls trikes a heavy rigid wall with a speed of 10m/s at an angle of 60°.It get s reflected withthesamespeedandangleasshownhere.Iftheballisincontactwiththewallfor0.20s,whatis the average for ce exerted on the ball by the wall?
Physics-General
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A block of mass m rests on a rough horizontal surface(Coefficient of friction isµ).When a bullet of mass ml2strikeshorizontally,andgetembeddedinit,theblockmoves a distanced before coming torest .The initialvelo city of the bulle is,
then the value of k is
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Physics-General
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Aspring of spring constant 5x103N/m is stretch edinitially by 5cm from theunstretchedposition.Thentheworkrequiredtostretchitfurtherbyanother5cmis
Aspring of spring constant 5x103N/m is stretch edinitially by 5cm from theunstretchedposition.Thentheworkrequiredtostretchitfurtherbyanother5cmis
Physics-General
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Two blocks are connected over a massless pulley as shown in fig. The mass of block A is 10 kg and the coefficien to f kineticfriction is 0.2.BlockA slides down the incline at constant speed. The mass of block B in kg is
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Physics-General
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Asatellite in a force frees paces weeps stationary interplanetary dust at a rate 
The acceleration of satellite is
Asatellite in a force frees paces weeps stationary interplanetary dust at a rate The acceleration of satellite is
Physics-General
Physics-
A vector of magnitude b is rotated through angle 
What is the change in magnitude of the vector?
A vector of magnitude b is rotated through angle What is the change in magnitude of the vector?
Physics-General
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Six
vectors,havethemagnitudesanddirectionsindicatedinthefigure.Whichofthefollowing
Sixvectors,havethemagnitudesanddirectionsindicatedinthefigure.Whichofthefollowing
Physics-General
Maths-
If 
is defined by 
If is defined by
Maths-General
Physics-
Four massless springs whose force constants are 2k, 2k, k and 2k respectively are attached to a mass M kept on a frictionless plane (as shown in figure). If the mass M is displaced in the horizontal direction, then the frequency of oscillation of the system is
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Physics-General
Physics-
A man having a wrist watch and a pendulum clock rises on a TV tower. The wrist watch and pendulum clock per chance fall from the top of the tower. Then
A man having a wrist watch and a pendulum clock rises on a TV tower. The wrist watch and pendulum clock per chance fall from the top of the tower. Then
Physics-General
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A man weighing 60 kg stands on the horizontal platform of a spring balance. The platform starts executing simple harmonic motion of amplitude 0.1 m and frequency 
. Which of the following statement is correct
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Physics-General
