Two spherical marbles are released from rest in a viscous fluid. The marbles are made of the same material but the radius of marble 2 is two times larger than the radius of marble 1. The density of the marbles is greater than the density of the fluid. Which one of the following statements is correct? At a particular speed, the resistive drag force of the fluid on marble 2 is twice the force on marble 1. The magnitude of the buoyant force on marble 2 is equal to the magnitude of the buoyant force on marble 1.     The resistive drag force of the fluid on a marble decreases as the speed of the marble increases. The resistive drag force of the fluid on a marble is constant until the marble reaches its terminal speed. The magnitude of the buoyant force on a marble equals the magnitude of its weight.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Two spherical marbles are released from rest in a viscous fluid.
The marbles are made of the same material but the radius of marble 2 is two times larger than the radius of marble 1.
The density of the marbles is greater than the density of the fluid.
Which one of the following statements is correct?

At a particular speed, the resistive drag force of the fluid on marble 2 is twice the force on marble 1.
The magnitude of the buoyant force on marble 2 is equal to the magnitude of the buoyant force on marble 1. 
   The resistive drag force of the fluid on a marble decreases as the speed of the marble increases.
The resistive drag force of the fluid on a marble is constant until the marble reaches its terminal speed.
The magnitude of the buoyant force on a marble equals the magnitude of its weight.
 
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