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Oscillations · Question 26

NEET 2016 (Phase 2)MCQEasy📈 Topic in 12% papers+4−1
1

A body of mass m is attached to the lower end of a spring whose upper end is fixed. The spring has negligible mass. When the mass m is slightly pulled down and released, it oscillates with a time period of 3 s. When the mass m is increased by 1 kg, the time period of oscillations becomes 5 s. The value of m in kg is

  1. 34
  2. 43
  3. 169
  4. 916

Answer

(4) 916

Solution

T = 2 mk T m

35 = mm + 1

925 = mm + 1

9m + 9 = 25m

m = 916 kg

Answer: (4)

NEET 2016 (Phase 2)

Keep practising — Oscillations

2

A particle is executing a simple harmonic motion. Its maximum acceleration is and maximum velocity is . Then, its time period of vibration will be

  1. 2
  2. 2
  3. 2 2
AIPMT 2015
3

A particle is executing SHM along a straight line. Its velocities at distances x1 and x2 from the mean position are V1 and V2 respectively. Its time period is

  1. 2 V12+V22x12+x22
  2. 2 V12-V22x12-x22
  3. 2 x12+x22V12+V22
  4. 2 x22-x12V12-V22
AIPMT 2015 (Cancelled)
4

When two displacements represented by y1 = a ( t) and y2 = b ( t) are superimposed the motion is

  1. simple harmonic with amplitude a2+b2
  2. simple harmonic with amplitude (a+b)2
  3. not a simple harmonic
  4. simple harmonic with amplitude ab
AIPMT 2015 (Cancelled)
5

The oscillation of a body on a smooth horizontal surface is represented by the equation, X = A ( t) where X = displacement at time t = frequency of oscillation Which one of the following graphs shows correctly the variation of a with t? Here a = acceleration at time t T = time period

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2014
6

A particle of mass m oscillates along x-axis according to equation x = a t. The nature of the graph between momentum and displacement of the particle is

  1. Circle
  2. Hyperbola
  3. Ellipse
  4. Straight line passing through origin
NEET 2013 (Karnataka)
7

Two particles are oscillating along two close parallel straight lines side by side, with the same frequency and amplitudes. They pass each other, moving in opposite directions when their displacement is half of the amplitude. The mean positions of the two particles lie on a straight line perpendicular to the paths of the two particles. The phase difference is

  1. 6
  2. 0
  3. 2 3
AIPMT 2011 (Mains)
8

A particle of mass m is released from rest and follows a parabolic path as shown. Assuming that the displacement of the mass from the origin is small, which graph correctly depicts the position of the particle as a function of time? [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2011 (Prelims)
9

Out of the following functions representing motion of a particle which represents SHM (1) y = sin t - cos t (2) y = sin3 t (3) y = 5 cos ( 3 4 - 3 t ) (4) y = 1 + t + 2 t2

  1. Only (1)
  2. Only (4) does not represent SHM
  3. Only (1) and (3)
  4. Only (1) and (2)
AIPMT 2011 (Prelims)
10

The displacement of a particle along the x-axis is given by x = a 2 . The motion of the particle corresponds to

  1. simple harmonic motion of frequency /
  2. simple harmonic motion of frequency 3 /2
  3. non simple harmonic motion
  4. simple harmonic motion of frequency /2
AIPMT 2010 (Prelims)
11

The period of oscillation of a mass M suspended from a spring of negligible mass is T. If along with it another mass M is also suspended, the period of oscillation will now be

  1. T
  2. T 2
  3. 2T
  4. 2T
AIPMT 2010 (Prelims)

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