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Fluid Mechanics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsFluid Mechanics1 Mark
Question
A closed cubical box is completely filled with water and is accelerated horizontally towards right with an acceleration α. The resultant normal force by the water on the top of the box.
  1. Passes through the centre of the top.
  2. Passes through a point to the right of the centre.
  3. Passes through a point to the left of the centre.
  4. Pecomes zeros.
✓

Answer

  1. Passes through a point to the left of the centre.
Explanation:
When the box is accelerated towards right, the water in the box experiences a pseudo force (ma) towards left, where m is the mass of water. So, the resultant normal force by the water on the top of the box passes through a point to the left of the centre.

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