What is the difference between upthrust and viscous drag

Gravitational force is always attractive , is directly proportional to the product of masses and inversely proportional to the square of the separation of the masses. Electric Force Electric force is the force experienced by a charge in the electric field of another charge.

Electric force can be either attractive unlike charges attract or repulsive like charges repel. Electric force is directly proportional to the product of charges and inversely proportional to the square of the separation of the charges.

Frictional Force Frictional force is a surface force exerted by surface that opposes relative motion. Consider a box on a surface. This is the normal force.

If the surface is horizontal, the normal force is equal to the weight, but if the surface is inclined, the normal force is equal to the perpendicular component of the weight to the surface. Viscous drag, unlike dry friction, highly depends on velocity. Different fluids have different viscosity, which affects the viscous drag. Consider a ball dropped in water and in oil. The motion of the ball in water is quicker than in the oil. The viscous force , which depends of the velocity, however, keeps increasing.

As a result, at some point, the net force on the ball becomes zero and the velocity of the ball becomes constant. The best book for both teachers and students to learn physics - exactly like in the good old days:concepts are clearly explained in detail;no meaningless cartoons to devour space;the author rendered a great service in his unique approach for generations of students, with this being the fourth edition. Physics flash cards have become an Amazon Best Seller; they are intuitive and summarizes the topic contents really well in beautiful layouts.

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The size of the Viscous Drag in a fluid depends on the coefficient of Viscosity of that fluid. The greater the Viscosity, the greater the Viscous Drag. In most liquids , Viscosity decreases as temperature increases , whereas in most gases , Viscosity increases as temperature increases.

It is therefore important to always measure the temperature of a fluid when measuring Viscosity. In this equation, v represents Terminal Velocity.