Some Systems Executing Simple Harmonic Motion
PHXI14:OSCILLATIONS

364343 An ideal gas enclosed in a vertical cylinderical container supports a freely moving piston of mass \(M\). The piston and the cylinder have equal cross sectional area A. When the piston is in equilibrium, the volume of the gas is \(V_{0}\) and its pressure is \(P_{0}\). The piston is slightly displaced from the equilibrium position and released. Assuming that the system is completely isolated from its surrounding, the piston executes a simple harmonic motion with frequency

1 \(\dfrac{1}{2 \pi} \dfrac{V_{0} M P_{0}}{A^{2} \gamma}\)
2 \(\dfrac{1}{2 \pi} \dfrac{A \gamma P_{0}}{V_{0} M}\)
3 \(\dfrac{1}{2 \pi} \sqrt{\dfrac{A^{2} \gamma P_{0}}{M V_{0}}}\)
4 \(\dfrac{1}{2 \pi} \sqrt{\dfrac{M V_{0}}{A \gamma P_{0}}}\)
PHXI14:OSCILLATIONS

364344 Assume that the earth is a solid sphere of uniform density and a tunnel is dug along its diameter throughout the earth. It is found that when a particle is released in this tunnel, it executes a simple harmonic motion. The mass of the particle is \(100\;g\). The time period of the motion of the particle will be (approximately) (Take \(g = 10\;m{s^{ - 2}}\), radius of earth \( = 6400\;km\))

1 1 hour 40 minutes
2 1 hour 24 minutes
3 12 hours
4 24 hours
PHXI14:OSCILLATIONS

364345 A uniform cylinder of length \(L\) and mass \(M\) having cross-sectional area \(A\) is suspended, with its length vertical, from a fixed point by a massless spring, such that it is half submerged in a liquid of density \(\sigma\) at equilibrium position. When the cylinder is given a downward push and released, it starts oscillating vertically with a small amplitude. The time period \(T\) of the oscillations of the cylinder will be

1 Smaller than \(2\pi {\left[ {\frac{M}{{(k + A\sigma g)}}} \right]^{1/2}}\)
2 \(2 \pi \sqrt{\dfrac{M}{k}}\)
3 Larger than \(2\pi {\left[ {\frac{M}{{(k + A\sigma g)}}} \right]^{1/2}}\)
4 \(2\pi {\left[ {\frac{M}{{(k + A\sigma g)}}} \right]^{1/2}}\)
PHXI14:OSCILLATIONS

364346 Assertion :
Water in U-tube executes SHM, the time period for mercury filled up to the same height in the U-tube be greater than that in case of water.
Reason :
The amplitude of the oscillating liquid in U-tube goes on decreasing.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI14:OSCILLATIONS

364343 An ideal gas enclosed in a vertical cylinderical container supports a freely moving piston of mass \(M\). The piston and the cylinder have equal cross sectional area A. When the piston is in equilibrium, the volume of the gas is \(V_{0}\) and its pressure is \(P_{0}\). The piston is slightly displaced from the equilibrium position and released. Assuming that the system is completely isolated from its surrounding, the piston executes a simple harmonic motion with frequency

1 \(\dfrac{1}{2 \pi} \dfrac{V_{0} M P_{0}}{A^{2} \gamma}\)
2 \(\dfrac{1}{2 \pi} \dfrac{A \gamma P_{0}}{V_{0} M}\)
3 \(\dfrac{1}{2 \pi} \sqrt{\dfrac{A^{2} \gamma P_{0}}{M V_{0}}}\)
4 \(\dfrac{1}{2 \pi} \sqrt{\dfrac{M V_{0}}{A \gamma P_{0}}}\)
PHXI14:OSCILLATIONS

364344 Assume that the earth is a solid sphere of uniform density and a tunnel is dug along its diameter throughout the earth. It is found that when a particle is released in this tunnel, it executes a simple harmonic motion. The mass of the particle is \(100\;g\). The time period of the motion of the particle will be (approximately) (Take \(g = 10\;m{s^{ - 2}}\), radius of earth \( = 6400\;km\))

1 1 hour 40 minutes
2 1 hour 24 minutes
3 12 hours
4 24 hours
PHXI14:OSCILLATIONS

364345 A uniform cylinder of length \(L\) and mass \(M\) having cross-sectional area \(A\) is suspended, with its length vertical, from a fixed point by a massless spring, such that it is half submerged in a liquid of density \(\sigma\) at equilibrium position. When the cylinder is given a downward push and released, it starts oscillating vertically with a small amplitude. The time period \(T\) of the oscillations of the cylinder will be

1 Smaller than \(2\pi {\left[ {\frac{M}{{(k + A\sigma g)}}} \right]^{1/2}}\)
2 \(2 \pi \sqrt{\dfrac{M}{k}}\)
3 Larger than \(2\pi {\left[ {\frac{M}{{(k + A\sigma g)}}} \right]^{1/2}}\)
4 \(2\pi {\left[ {\frac{M}{{(k + A\sigma g)}}} \right]^{1/2}}\)
PHXI14:OSCILLATIONS

364346 Assertion :
Water in U-tube executes SHM, the time period for mercury filled up to the same height in the U-tube be greater than that in case of water.
Reason :
The amplitude of the oscillating liquid in U-tube goes on decreasing.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI14:OSCILLATIONS

364343 An ideal gas enclosed in a vertical cylinderical container supports a freely moving piston of mass \(M\). The piston and the cylinder have equal cross sectional area A. When the piston is in equilibrium, the volume of the gas is \(V_{0}\) and its pressure is \(P_{0}\). The piston is slightly displaced from the equilibrium position and released. Assuming that the system is completely isolated from its surrounding, the piston executes a simple harmonic motion with frequency

1 \(\dfrac{1}{2 \pi} \dfrac{V_{0} M P_{0}}{A^{2} \gamma}\)
2 \(\dfrac{1}{2 \pi} \dfrac{A \gamma P_{0}}{V_{0} M}\)
3 \(\dfrac{1}{2 \pi} \sqrt{\dfrac{A^{2} \gamma P_{0}}{M V_{0}}}\)
4 \(\dfrac{1}{2 \pi} \sqrt{\dfrac{M V_{0}}{A \gamma P_{0}}}\)
PHXI14:OSCILLATIONS

364344 Assume that the earth is a solid sphere of uniform density and a tunnel is dug along its diameter throughout the earth. It is found that when a particle is released in this tunnel, it executes a simple harmonic motion. The mass of the particle is \(100\;g\). The time period of the motion of the particle will be (approximately) (Take \(g = 10\;m{s^{ - 2}}\), radius of earth \( = 6400\;km\))

1 1 hour 40 minutes
2 1 hour 24 minutes
3 12 hours
4 24 hours
PHXI14:OSCILLATIONS

364345 A uniform cylinder of length \(L\) and mass \(M\) having cross-sectional area \(A\) is suspended, with its length vertical, from a fixed point by a massless spring, such that it is half submerged in a liquid of density \(\sigma\) at equilibrium position. When the cylinder is given a downward push and released, it starts oscillating vertically with a small amplitude. The time period \(T\) of the oscillations of the cylinder will be

1 Smaller than \(2\pi {\left[ {\frac{M}{{(k + A\sigma g)}}} \right]^{1/2}}\)
2 \(2 \pi \sqrt{\dfrac{M}{k}}\)
3 Larger than \(2\pi {\left[ {\frac{M}{{(k + A\sigma g)}}} \right]^{1/2}}\)
4 \(2\pi {\left[ {\frac{M}{{(k + A\sigma g)}}} \right]^{1/2}}\)
PHXI14:OSCILLATIONS

364346 Assertion :
Water in U-tube executes SHM, the time period for mercury filled up to the same height in the U-tube be greater than that in case of water.
Reason :
The amplitude of the oscillating liquid in U-tube goes on decreasing.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
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PHXI14:OSCILLATIONS

364343 An ideal gas enclosed in a vertical cylinderical container supports a freely moving piston of mass \(M\). The piston and the cylinder have equal cross sectional area A. When the piston is in equilibrium, the volume of the gas is \(V_{0}\) and its pressure is \(P_{0}\). The piston is slightly displaced from the equilibrium position and released. Assuming that the system is completely isolated from its surrounding, the piston executes a simple harmonic motion with frequency

1 \(\dfrac{1}{2 \pi} \dfrac{V_{0} M P_{0}}{A^{2} \gamma}\)
2 \(\dfrac{1}{2 \pi} \dfrac{A \gamma P_{0}}{V_{0} M}\)
3 \(\dfrac{1}{2 \pi} \sqrt{\dfrac{A^{2} \gamma P_{0}}{M V_{0}}}\)
4 \(\dfrac{1}{2 \pi} \sqrt{\dfrac{M V_{0}}{A \gamma P_{0}}}\)
PHXI14:OSCILLATIONS

364344 Assume that the earth is a solid sphere of uniform density and a tunnel is dug along its diameter throughout the earth. It is found that when a particle is released in this tunnel, it executes a simple harmonic motion. The mass of the particle is \(100\;g\). The time period of the motion of the particle will be (approximately) (Take \(g = 10\;m{s^{ - 2}}\), radius of earth \( = 6400\;km\))

1 1 hour 40 minutes
2 1 hour 24 minutes
3 12 hours
4 24 hours
PHXI14:OSCILLATIONS

364345 A uniform cylinder of length \(L\) and mass \(M\) having cross-sectional area \(A\) is suspended, with its length vertical, from a fixed point by a massless spring, such that it is half submerged in a liquid of density \(\sigma\) at equilibrium position. When the cylinder is given a downward push and released, it starts oscillating vertically with a small amplitude. The time period \(T\) of the oscillations of the cylinder will be

1 Smaller than \(2\pi {\left[ {\frac{M}{{(k + A\sigma g)}}} \right]^{1/2}}\)
2 \(2 \pi \sqrt{\dfrac{M}{k}}\)
3 Larger than \(2\pi {\left[ {\frac{M}{{(k + A\sigma g)}}} \right]^{1/2}}\)
4 \(2\pi {\left[ {\frac{M}{{(k + A\sigma g)}}} \right]^{1/2}}\)
PHXI14:OSCILLATIONS

364346 Assertion :
Water in U-tube executes SHM, the time period for mercury filled up to the same height in the U-tube be greater than that in case of water.
Reason :
The amplitude of the oscillating liquid in U-tube goes on decreasing.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.