Question

The potential energy of a weight less spring compressed by a distance $a$, is proportional to

• A. $a$
• B. $a^2$
• C. $a^{-2}$
• D. $a^0$

Answer 1

Answer: (B)

$a^2$

It is known that Potential energy of spring = $\frac{1}{2}K{x}^2$

here $x=a$

$\therefore PE\propto x^2\Rightarrow PE\propto a^2$