Water rises in a capillary tube to a certain height such

Question

Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by 75 × 10-4 N, forces due to the weight of the liquid. If the surface tension of water is 6 × 10-2 N/m, the inner-circumference of the capillary must be (a) 1.25 × 10-2 m (b) 0.50 × 10-2 m (c) 6.5 × 10-2 m (d) 12.5 × 10-2 m

Daniyal · Accepted Answer

The upward force due to the change in pressure in the capillary.F(up)=∆P*A =(2*S.T.*cos(angle of contact)/R)*πR^2 assuming angle of contact to be zero =2*π*R*S.T.=(circumference)*(6*10^(-2)) This F(up)=75*10^(-4) From there you will get Circumference is 12.5*10^(-2)m.

General Physics> Water rises in a capillary tube to a cert...

saurabh kumar , 11 Years ago

Daniyal

LIVE ONLINE CLASSES

moment of inertia of a equilateral triangle about an axis passing through centre and perppendicular to the plane

general physics

. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction of
the earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate the
deviation (a) at 40 latitude, (b) at the poles, and (c) at the equator

general physics

general physics

A block is kept on x-y plane at a point (2m,3m). It is pushed with a force of magnitude 10 Ntowards point (5m,7m). The force can be represented as?

general physics

The phase of particle at t is 70°and another particle is at t is 790° what is wavelength if the distance between two particles is1 m

general physics

General Physics> Water rises in a capillary tube to a cert...

saurabh kumar , 11 Years ago

Daniyal

LIVE ONLINE CLASSES

Other Related Questions on general physics

moment of inertia of a equilateral triangle about an axis passing through centre and perppendicular to the plane

general physics

. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction ofthe earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate thedeviation (a) at 40 latitude, (b) at the poles, and (c) at the equator

general physics

general physics

A block is kept on x-y plane at a point (2m,3m). It is pushed with a force of magnitude 10 Ntowards point (5m,7m). The force can be represented as?

general physics

The phase of particle at t is 70°and another particle is at t is 790° what is wavelength if the distance between two particles is1 m

general physics

. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction of
the earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate the
deviation (a) at 40 latitude, (b) at the poles, and (c) at the equator