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  • A plank is floating in a non-viscous liquid as shown in the figure. Choose the incorrect option. <img alt="" src="https://cdn.entrance360.com/media/uploads/2023/08/19/1291.png" style="hei

A plank is floating in a non-viscous liquid as shown in the figure. Choose the incorrect option.

Option: 1

The equilibrium of the plank is stable in the vertical direction.


Option: 2

For small oscillations of the plank in the vertical direction, motion is simple harmonic.


Option: 3

Even if the oscillations are large, motion is simple harmonic till it is not fully immersed.


Option: 4

On vertical displacement, the motion is periodic but not simple harmonic.


Answers (1)

best_answer

Restoring force 

        = -(\rho A g) x

or

F \alpha (-x)

This is just like a spring-block system of force constant so, it is SHM.

k = \rho A g

Posted by

chirag

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