Viscous force at terminal velocity equals weight minus buoyancy

1. A.
   3:1
2. B.
   4:1
3. C.
   1:3
4. D.
   1:4

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1. A.
   2:1
2. B.
   3:1
3. C.
   4:1
4. D.
   6:1

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1. A.
   $mg\!\left(1+\dfrac{\sigma_2}{\sigma_1}\right)$
2. B.
   $mg\!\left(1-\dfrac{\sigma_1}{\sigma_2}\right)$
3. C.
   $mg\!\left(1-\dfrac{\sigma_2}{\sigma_1}\right)$
4. D.
   $mg\!\left(1+\dfrac{\sigma_1}{\sigma_2}\right)$

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1. A.
   $mg\left( 1 - \frac{d_{2}}{{\text{ }d}_{1}} \right)$
2. B.
   $\ mg\left( 1 + \frac{d_{2}}{d_{1}} \right)$
3. C.
   $\ mg\left( 1 - \frac{d_{1}}{{\text{ }d}_{2}} \right)$
4. D.
   $mg\left( 1 + \frac{d_{1}}{d_{2}} \right)$

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1. A.
   $5$
2. B.
   $6$
3. C.
   $7$
4. D.
   $8$

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1. A.
   $Mg$
2. B.
   $\dfrac{3Mg}{2}$
3. C.
   $2Mg$
4. D.
   $\dfrac{Mg}{2}$

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