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Question
Select the correct decreasing order of fluid friction on a circular ball offered by various fluid mediums.
Select the correct decreasing order of fluid friction on a circular ball offered by various fluid mediums.
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Solution
The correct option is D Honey > Water > Air > Vacuum
The frictional force on an object moving through a fluid depends on nature of the fluid.
A vacuum doesn't offer any friction to a body moving through it because of absence of medium particles.
Air offers some fluid friction, but definitely less then water and honey since its medium particles are placed at a much larger distance.
Between honey and water, honey is denser than the water and hence more fluid friction is offered by the honey than the water.
Therefore, the correct decreasing order is:
Honey > Water > Air > Vacuum.
The frictional force on an object moving through a fluid depends on nature of the fluid.
A vacuum doesn't offer any friction to a body moving through it because of absence of medium particles.
Air offers some fluid friction, but definitely less then water and honey since its medium particles are placed at a much larger distance.
Between honey and water, honey is denser than the water and hence more fluid friction is offered by the honey than the water.
Therefore, the correct decreasing order is:
Honey > Water > Air > Vacuum.
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