A big drop is formed by coalescing 1000 small droplets of water. The ratio of surface energy of 1000 droplets to that of energy of big drop is $\frac{10}{x}$. The value of $x$ is ________.
Answer (integer)
1
Solution
<p>$R_{\text {big }}=10 R_{\text {small }}$</p>
<p>$$ \Rightarrow {{{E_{1000}}} \over {{E_{big}}}} = {{1000 \times T \times 4\pi {{\left[ {{{{R_{big}}} \over {10}}} \right]}^2}} \over {T \times 4\pi R_{big}^2}} = {{10} \over 1}$$</p>
About this question
Subject: Physics · Chapter: Properties of Solids and Liquids · Topic: Elasticity
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