Simple Harmonic Motion

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Simple Harmonic Motion: Overview

This topic covers concepts, such as, Periodic Motion, Oscillatory Motion, Phase & Comparison between Linear SHM and Angular SHM etc.

Important Questions on Simple Harmonic Motion

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Electrons moving with different speeds enter a uniform magnetic field in a direction perpendicular field. They will move along circular paths, time periods of rotation will be :

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In SHM X=2sinωt-π4, the phase constant can be shown as?

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Equation of motion of a particle is given by a=-bx, where a is the acceleration, x is the displacement from the mean position and b any constant. The time period of the particle is

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If SHM is represented by X=A cosωt+ϕ, then "ϕ" is 

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If "V" is the magnitude of velocity "A" is the magnitude of displacement, then at the mean position of the particle performing SHM-

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If simple harmonic motion is represented by X=A cosωt+ϕ, then 'ω' is-

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One end of a rod of length L is fixed to a point on the circumference of a wheel of radius R. The other end is sliding freely along a straight channel passing through the centre O of the wheel as shown in the figure below. The wheel is rotating with a constant angular velocity ω about O. Taking T=2πω, the motion of the rod is

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Match the following entries in column-I and column-II with respect to an oscillating spring-block system:

  column-I   column-II
(a) Mass of the block is doubled (i) Energy of oscillation becomes 4 times
(b) Spring constant is made 4 times (ii) Speed of block becomes 2 times
(c) Amplitude of oscillations is doubled (iii) P.E. becomes 4 times
(d) Angular frequency is doubled (iv) Time period becomes 2 times

 

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A body is performing simple harmonic motion of amplitude A and time period T. The figure shows position-time graph of the body. At any time t, acceleration of the body is f, then which of the following graphs is/are appropriate?

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1 kg block attached to a spring vibrates with a frequency of 1 Hz on a frictionless horizontal table. Two springs identical to the original spring are attached in parallel to a 8 kg block placed on the same table. So, the frequency of vibration of the 8 kg block is 

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The type of graph between length of a simple pendulum and time period is -

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The function y=sinωt-cosωt represents

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Displacement vs time curve for a particle performing SHM is as shown in the figure.
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Which of the following statement is correct?

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If the frequency of human heart is 1.25 Hz, the number of times the heart beats in 1 min is

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A body of mass M and charge q is connected to a spring of spring constant k. It is oscillating along x -direction about its equilibrium position in horizontal plane, taken to be at x=0, with an amplitude A. An electric field E is applied along the x -direction. Which of the following statements is correct?

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The potential energy of a particle of mass 0.1 kg moving along the x-axis, is given by U=5xx-4 J, where x is in metres. Choose the wrong option.

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A spring has a natural length of 50 cm and a force constant of 2.0×103Nm-1. A body of mass 10 kg is suspended from it and the spring is stretched. If the body is pulled down to a length of 58 cm and released, it executes simple harmonic motion. What is the net force on the body when it is at its lowermost position of its oscillation? (Take g=10 ms-2).

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A particle is fastened at the end of a string and is whirled in a vertical circle with the other end of the string being fixed. The motion of the particle is,

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The restoring force of SHM is maximum when particle

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Assertion: The time period of the SHM of a system consisting of a mass attached to spring does not depend on whether it is hanging vertically from fixed support or lying on a horizontal table with another end of the spring fixed.

Reason: In the spring block system gravity affects only the mean position. The time period depends only on mass & spring constant.