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CBSE Class 11-science Answered

How will the weight of a body be affected,when it falls with its terminal velocity through a viscous medium?
Asked by PAWANDEEP KAUR | 02 Feb, 2011, 12:00: AM
Expert Answer
Dear student,
 
As the object accelerates (usually downwards due to gravity), the drag force acting on the object increases, causing the acceleration to decrease. At a particular speed, the drag force produced will equal the object's weight (mg). At this point the object ceases to accelerate altogether and continues falling at a constant speed called terminal velocity (also called settling velocity). Terminal velocity varies directly with the ratio of weight to drag. More drag means a lower terminal velocity, while increased weight means a higher terminal velocity. An object moving downward with greater than terminal velocity (for example because it was affected by a downward force or it fell from a thinner part of the atmosphere or it changed shape) will slow until it reaches terminal velocity.
Hope this helps.
Thanking you
Team
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Answered by | 02 Feb, 2011, 07:47: PM
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