Class 11 · Chapter 10
Mechanical Properties of Fluids
Overview, notes, short notes, formula sheet, daily practice problems, previous year questions, and videos for this chapter — all in one place.
Mechanical Properties of Fluids JEE Notes
Fully worked, JEE-style problems on fluids in accelerating containers, Bernoulli's theorem, terminal velocity, and surface tension — going a level beyond the regular DPP, into the multi-step setups JEE Main and JEE Advanced actually test.
A container of liquid accelerates horizontally at 5 m/s². Find the angle the free surface makes with the horizontal. (g = 10 m/s²)
A container of water (density 1000 kg/m³) accelerates horizontally at 5 m/s². Find the pressure difference between two points on the bottom, 2 m apart along the direction of acceleration.
Water (density 1000 kg/m³) flows through a horizontal pipe with a pressure drop of 4000 Pa between two points at the same height, where the flow speeds are negligible at the wider section. Find the flow speed at the narrower section.
A small steel ball of radius 3 mm and density 8000 kg/m³ falls through oil of density 1000 kg/m³ and viscosity 0.1 Pa·s. Find its terminal velocity. (g = 10 m/s²)
A soap bubble and a liquid drop, both of radius 1 mm, are formed from a liquid of surface tension 0.03 N/m. Find the excess pressure inside each.
Water (surface tension 0.07 N/m, density 1000 kg/m³) rises in a capillary tube of radius 0.2 mm. Find the height of rise, assuming complete wetting (contact angle ≈ 0°). (g = 10 m/s²)
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