Exercise - 3
Embibe Experts Physics Solutions for Exercise - 3
Simple step-by-step solutions to Exercise - 3 questions of Viscosity and Surface Tension from Alpha Question Bank for Engineering: Physics. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.
Questions from Exercise - 3 with Hints & Solutions
A small sphere falls from rest in a viscous liquid. Due to friction, heat is produced. Find the relation between the rate of production of heat and the radius of the sphere at terminal velocity.
Two spheres and of equal radii have densities and , respectively. The spheres are connected by a massless string and placed in liquids and of densities and viscosities and , respectively. They float in equilibrium with the sphere in and sphere in and the string is being taut (see figure). If sphere alone in has terminal velocity and alone in has terminal velocity , then
Consider a thin square plate floating on a viscous liquid in a large tank. The height of the liquid in the tank is much less than the width of the tank. The floating plate is pulled horizontally with a constant velocity . Which of the following statements is (are) true?
Spherical balls of radius Are falling in a viscous fluid of viscosity with a velocity . The retarding viscous force acting on the spherical ball is:
A spherical solid ball of volume is made of a material of density . It is falling through a liquid of density . [Assume that the liquid applies a viscous force on the ball that is proportional to the square of its speed , i.e. ]. The terminal speed of the ball is
A tiny spherical oil drop carrying a net charge is balanced in still air with a vertical uniform electric field of strength . When the field is switched off, the drop is observed to fall with terminal velocity Given viscosity of the air and the density of oil the magnitude of is: