Physics-
General
Easy
Question
A pendulum of length lift at When it reaches it losses 10% of its total energy due to air resistance. The velocity at is
The correct answer is:
If is velocity of pendulum at
and 10% energy is lost while moving from to
Hence, by applying conservation of energy between and
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A simple pendulum with a bob of mass oscillates from to and back to such that is If the acceleration due to gravity is then the velocity of the bob as it passes through is
A simple pendulum with a bob of mass oscillates from to and back to such that is If the acceleration due to gravity is then the velocity of the bob as it passes through is
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Consider the mechanical vibrating systems shown in figure . The vibrations are simple harmonic in
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A and Bare fixed points and the mass M is tied by strings at A and B. If the mass M is displaced slightly out of this plane and released, it will execute oscillations with period ( given
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The displacement of two identical particle executing SHM are represented by equations and For what value of energy of both the particle is same?
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An object suspended from a spring exhibits oscillations of period T. Now the spring is cut in two halves and the same object is suspended with two halves as shown in figure. The new time period of oscillation will become
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A block [b] is attached to two unstretched springs and with spring constants and 4 k, respectively (see figure I). The other ends are attached to identical supports and not attached to the walls. The springs and supports have negligible mass. There is no friction anywhere. The block B is displaced towards wall 1 by a small distance (figure II) and released. The block returns and moves a maximum distance towards wall 2. Displacements and are measured with respect to the equilibrium position of the block B. The ratio is
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A mass performs oscillations of period when hanged by spring of force constant If spring is cut in two parts and arranged in parallel and same mass is oscillated by them, then the new time period will be
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For a particle executing SHM the displacement is given by . Identify the graph which represents the variation of potential energy (PE) as a function of time and displacement .
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Two identical springs are connected in series and parallel as shown in the figure. If are frequencies of arrangements, what is ?
Two identical springs are connected in series and parallel as shown in the figure. If are frequencies of arrangements, what is ?
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A smooth track is shown in figure. A part of track is a circle of radius R. A block of mass m is pushed against a spring of constant k fixed at the left end and is then released. The initial compression of the spring so that the block presses the track with a force mg when it reaches the point P of the track, where R is radius of the track :
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A block weighing 10 N travels down a smooth curved track AB joined to a rough horizontal surface. The rough surface has a friction coefficient of 0.20 with the block. If the block starts slipping on the track from a point 1.0 m above the horizontal surface, then it would move a distance S on the rough surface. The value of S is
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Consider the situation shown in the figure. Initially the spring is unstreched when the system is released from rest. Assuming no friction in the pulley, the maximum elongation of the spring is
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Acceleration and time period of a body in S.H.M. is given by a curve shown below. Then corresponding graph, between identic energy (K.E) and time is correctly represented by
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