Mechanical Properties of Fluids
Two spheres of radii r1=1cm,r2=2cm moves with speed v1=20cm/s and v2=10cm/s respectively in a viscous medium. Neglecting gravity find F2F1? (where F1 and F2 are viscous force on sphere of radius r1 and r2 respectively).
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Two water drops of radii R1 and R2 are falling with their terminal velocity. If some how gravity is switched off, what is the ratio of their initial accelerations (Just after gravity is switched off).
If the terminal speed of a sphere of gold (density =19.5kg/m3) is 0.2m/s in a viscous liquid (density =1.5kg/m3), find the terminal speed of a sphere of silver (density =10.5kg/m3) of the same size in the same liquid
A object of mass 1 kg and radius 1 m is falling vertically downward inside liquid in a gravity free space. At t=0 velocity of the sphere is 2ms−1. If the of viscosity of the liquid is 18π1 Pas, the velocity of the ball will become 0.5ma −1 after a time (in second)
What will be the terminal velocity of a steel ball of radius 2 mm in glycerine?
A sphere is dropped gently into a medium of infinite extent. As the sphere falls, the force acting downwards on it
Two spheres of equal masses but radii r1 and r2 are allowed to fall in a liquid of infinite column. The ratio of their terminal velocities is:
A rain drop of radius 1.5mm, experience a drag force F=(12×10−5v)N, while falling through air from a height 2km, with a velocity v. The terminal velocity of the rain drop will be nearly (useg=10m/s2)