A ball of radius r falls through oil

Another interesting force in everyday life is the force of drag on an object when it is moving in a fluid either a gas or a liquid.

A moving object in a viscous fluid is equivalent to a stationary object in a flowing fluid stream. Flow of the stationary fluid around a moving object may be laminar, turbulent, or a combination of the two. Just as with flow in tubes, it is possible to predict when a moving object creates turbulence. Depending on the surface, there can be a turbulent wake behind the object with some laminar flow over its surface. See Figure 1. Laminar flow occurs mostly when the objects in the fluid are small, such as raindrops, pollen, and blood cells in plasma. This value is sufficiently high to imply a turbulent wake.

A ball of radius r falls through oil

Are you sure you want to logout? Yes No. Have a query? Ask a Tutor!! Access to best educators and exclusive paper discussions. Please update the Email address in the profile section, to refer a friend. Update Later. Ask a doubt. The correct answer is:. A piece of Ice floats in a vessel with water above which a layer of lighter oil is poured. When ice melts : 1. The level of oil water interface falls 2. The level of oil water interface rises 3. The thickness of oil layer decreases 4. The thickness of oil layer remain same 5.

The value of the drag coefficient C is determined empirically, usually with the use of a wind tunnel Figure. View Solution.

Spherical balls of radius R are falling in a viscous fluid of velocity v. The retarding viscous force acting on the spherical ball is. A copper ball of radius r travels with a uniform speed v in a viscous fluid if the ball is changed withh another ball of radius 2r then new uniform speed will be. Two metal ball of radius R and 2 R falling through a fluid have same velocity at some point. The viscous drag acting on them at that instant are in the ratio.

A moving object in a viscous fluid is equivalent to a stationary object in a flowing fluid stream. Flow of the stationary fluid around a moving object may be laminar, turbulent, or a combination of the two. Just as with flow in tubes, it is possible to predict when a moving object creates turbulence. Depending on the surface, there can be a turbulent wake behind the object with some laminar flow over its surface. See Figure 1. Laminar flow occurs mostly when the objects in the fluid are small, such as raindrops, pollen, and blood cells in plasma.

A ball of radius r falls through oil

A moving object in a viscous fluid is equivalent to a stationary object in a flowing fluid stream. Flow of the stationary fluid around a moving object may be laminar, turbulent, or a combination of the two. Just as with flow in tubes, it is possible to predict when a moving object creates turbulence. Depending on the surface, there can be a turbulent wake behind the object with some laminar flow over its surface.

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CISF Tradesman. TN Forest Guard. The following is the relation between the object distance and the image distance in a plane mirror image :. Search for:. Army Tradesman Agniveer. Does a heavy rain make any difference? Indian Coast Guard. If falls with a conti JEE Advanced. When at rest it receives an impulsive blow of 10 Ns at its lowest point, normal to its length as shown in figure. Indian Airforce Agniveer. CIL MT. Particles in liquids achieve terminal velocity quickly.

To make it simple, we take a sphere.

Uttarakhand Police SI. Glossary drag force force that always opposes the motion of an object in a fluid; unlike simple friction, the drag force is proportional to some function of the velocity of the object in that fluid terminal velocity constant velocity achieved by a falling object, which occurs when the weight of the object is balanced by the upward drag force. Goa Police Sub Inspector. Conceptual Questions 1. Maharashtra Forest Department Lekhpal. AP Animal Husbandry Assistant. PMC Clerk. RBI Grade B. Vizag Steel Trade Apprentice. Bihar TET. Assam Animal Husbandry Veterinary. Odisha Livestock Inspector. Video Solution. TN TRB.