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Q.
Which of the following ratios has the dimension of mass?
AMUAMU 2014
Solution:
$\frac{\text { surface Tension }}{\text { Angular velocity }}=\frac{ F / l }{( V / r )^{2}}$
$=\frac{F \cdot r^{2}}{l \cdot v^{2}}=\frac{m \cdot a \cdot r^{2}}{l \cdot v^{2}}$
$\frac{kg \times \frac{m}{r^2}\times m^2}{m \times \frac{m^2}{r^2}}$
$=kg \to $ unit of mass