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Concepts Of Physics MCQ Edition [Volume 1]PhysicsFluid Mechanics

A closed cubical box is completely filled with water and is accelerated horizontally towards right with an acceleration a . Let the water push the left wall by a force F₁ and the right wall by a force F₂ .

Options

  1. AF₁ = F₂
  2. BF₁ > F₂
  3. CF₁ < F₂
  4. Dthe information is insufficient to know the relation between F₁ and F₂

Correct answer

B. F₁ > F₂

Step-by-step solution

Consider the water inside the cubical box as the system. Let the mass of the water be m . The box and the water are accelerating horizontally towards the right with an acceleration a . The horizontal forces acting on the water are the normal force from the left wall N₁ acting towards the right, and the normal force from the right wall N₂ acting towards the left. Since the water is at rest relative to the box, there are no viscous forces acting on it. Applying Newton's second law of motion in the horizontal directio

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