Home
Class 11
PHYSICS
A liquid is contain in a vertical tube o...

A liquid is contain in a vertical tube of semicircular cross section figure. The contact angle is zero. The force of surface tension on the curved part and on the flat part are in ratio

Text Solution

Verified by Experts

Force on curved part `(F_(1))=Sxxpir`
Force on flat part `(F_(2))=Sxx2r`
`:.(F_(1))/(F_(2))=pi:2`
Promotional Banner

Similar Questions

Explore conceptually related problems

A uniform vertical tube of circular cross section contains a liquid. The contact angle is 90^@ . Consider a diameter of the tube lying in the surface of the liquid. The surface of the right of this diameter pulls the surface on the left of it. What keeps the surface on the left in equilibrium?

A liquid is coming out from a vertical tube. The relation between the weight of the drop W , surface tension of the liquid T and radius of the tube r is given by, if the angle of contact is zero

Diameter of the flat surface of a circular plano-convex lens is 6 cm and thickness at the centre is 3 mm. The radius of curvature of the curved part is

A solid hemisphere of radius R is made to just sink in a liquid of density rho . Find a. the vertical thrust on the curved surface b. the vertical thrust on the flat surface c. the side thrust on the hemisphere. d. the total hydrostatic force acting on the hemisphere.

A particle slides along a track with elevated ends and a flat central part as shown in figure. The flat part has a length l=3m . The curved portions of the track are frictionless. For the flat part, the coefficient of kinetic friction is mu_k=0.2 . The particle is released at point A which is at height h=1.5m above the flat part of the track. Where does the particle finally come to rest?

A uniform rod of mass M and length L, area of cross section A is placed on a smooth horizontal surface. Forces acting on the rod are shown in the digram Ratio of elongation in section PQ of rod and section QR of rod is

A long glass capillary (radius R) is taken out of liquid (surface tension S and density rho ) in vertical position. Angle of contact everywhere is zero. Atmospheric pressure is P_(0) . It is observed that the capillary retains some liquid. The radius of curvature of meniscus at the bottom of tube is

When a vertical capillary of length l with a sealed upper end was brought in contact with the surface of a liquid, the level of this liquid rose to the height h . The liquid density is rho , the inside diameter the capillary is d , the contact angle is theta , the atmospheric pressure is rho_(0) . Find the surface tension of the liquid. (Temperature in this process remains constant.)

When a vertical capillary of length with the sealed upper end was brought in contact with the surface of a liquid, the level of this liquid rose to the height h . The liquid density is rho , the inside diameter the capillary is d , the contact angle is theta , the atmospheric pressure is rho_(0) . Find the surface tension of the liquid. (Temperature this process remains constant.)

A long glass capillary (radius R) is taken out of liquid (surface tension S and density rho ) in vertical position. Angle of contact everywhere is zero. Atmospheric pressure is P_(0) . It is observed that the capillary retains some liquid. The length of liquid column retained in the capillary is