Home
Class 11
PHYSICS
A cube with mass m completely wettable b...


A cube with mass `m` completely wettable by water floats on the surface of water each side of the cube is `a` what is the distance `h` between the lower face of cube and the surface of the water if surafce tension is S. Take densities of water as `rho_(w)` take angle of contact is zero.

Text Solution

Verified by Experts

The correct Answer is:
`h=(mg+4Sa)/(rho_(w)a^(2)g)`
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN|Exercise Exercise 5 A (Previous year Questions)|29 Videos

  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN|Exercise Exercise 5 B (MCQ)|13 Videos

  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN|Exercise Exercise 4 A (Viscosity)|3 Videos

  • CENTRE OF MASS

    ALLEN|Exercise EXERCISE-V B|19 Videos

  • ERROR AND MEASUREMENT

    ALLEN|Exercise Part-2(Exercise-2)(B)|22 Videos

Similar Questions

Explore conceptually related problems

A cube with a mass = 20 g wettable water floats on the surface of water. Each face of the cube is alpha = 3 cm long. Surface tension of water is 70 dyn//cm . The distance of the lower face of the cube from the surface of water is ( g= 980 cm s^(-12) )

A cube of mass m =800 g floats on the surface of water. Water wets it completely. The cube is 10 cm on each edge. By what additional distance is it buoyed up or down by surface tension? Surface tension of water =0.07Nm^(-1)

An ice cube containing a galss ball is floating on the surface of water contained in a trough. The whole of the ice melts, the level of water in the trough

A cube of side a and mass on just floats on the surface of water as shown in the figure. The surface tension and density of water are T and rho_(w) respectively. If angle of contact between cube and water surface is zero, find the distance h (in metres) between the lower face of cube and surface of the water. (Take m=1kg, g=10ms^(-12), aT=10/4 unit and rho_(w)a^(2)g=10 unit)

A wooden cube of side 10 cm has mass 700g What part of it remains above the water surface while floating vertically on the water surface?

A cube of wood supporting 200gm mass just floats in water. When the mass is removed, the cube rises by 2cm. What is the size of the cube?

A drop of water of mass m and density rho is placed between two weill cleaned glass plates, the distance between which is d . What is the force of attraction between the plates? (T= surface tension)

Each side of a cube is measured to be 6.230 m. What is the total surface area and the volume of cube to appropriate significant figures?

Assertion :The contact angle between water and glass is acute. Reason :The surface of water in the capillary is convex .

Assertion :The contact angle between water and glass is acute. Reason :The surface of water in the capillary is convex .