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A tray of mass 12 kg is supported by two...

A tray of mass 12 kg is supported by two identical springs as shown in figure. When the tray is pressed down slightly and released, it executes SHM with a time period of 1.5s. What is the force constant of each spring?When a block of mass m is placed on the tray , the period of SHM changes to 3.0s. What is the mass of the block ?

A

18 kg

B

36 kg

C

9 kg

D

27 kg

Text Solution

Verified by Experts

The correct Answer is:
B
`(T.)/(T) = sqrt((M+m)/(M))`
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NARAYNA-OSCILLATIONS-EXERCISE - IV
  1. Two blocks lie on each other and connected to a spring as shown in fig...

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  2. In the device shown in the figure, the block of mass 20 kg is displace...

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  3. A tray of mass 12 kg is supported by two identical springs as shown in...

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  4. A particle of mass 'm' is attached to three identical springs A,B and ...

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  6. The bob of a simple pendulum is displaced from its equilibrium positio...

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  7. A disc of mass M is attached to a horizontal massless spring of force ...

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  8. A block of mass 'm' collides perfectly inelastically with another iden...

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  9. Two identical particles each of mass 0.5kg are interconnected by a lig...

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  10. The kinetic energy of SHM is 1/n time its potential energy. If the amp...

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  11. The potential energy of a particle oscillating along x-axis is given a...

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  12. A uniform cylinder of length (L) and mass (M) having cross sectional a...

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  14. A rod with rectangular cross section oscillates about a horizontal axi...

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  17. A disc of radius R and mass M is pivoted at the rim and it set for sma...

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  18. The maximum tension in the string of an oscillating simple pendulum is...

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  19. The equation of a damped simple harmonic motion is m(d^2x)/(dt^2)+b(dx...

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  20. A simple pendulum is set up in a trolley which moves to the right with...

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