MEDIUM
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Which of the following is a necessary and sufficient condition for S.H.M.?

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Important Questions on Oscillations

HARD
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IMPORTANT
For a particle executing simple harmonic motion, which of the following statements is not correct?
EASY
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IMPORTANT
Two springs of constants k1 and  k2 have equal maximum velocities, when executing simple harmonic motion. The ratio of their amplitudes (masses are equal) will be
MEDIUM
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The force constant of a wire is k and that of another wire of the same material is 2k. When both the wires are stretched equally, then work done are related as:
MEDIUM
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A mass is suspended from a spring having spring constant k is displaced vertically and released, it oscillates with period T. The weight of the mass suspended is (g=gravitational acceleration)
EASY
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IMPORTANT
The period of oscillation of a mass M, hanging from a spring of force constant k is T . When additional mass m is attached to the spring, the period of oscillation becomes 5T4.then mM=
MEDIUM
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IMPORTANT
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