Doubling which quantity would cause the largest increase in a spring’s elastic potential energy?
displacement
spring constant
mass
gravitational acceleration

Answer : Doubling displacement would cause the largest increase in a spring’s elastic potential energy.

Explanation :

The work done in stretching a spring is called elastic potential energy.

Where,

k is the spring constant.

x is the displacement.

So, elastic potential energy is directly proportional to the displacement.

So, doubling the displacement would increase its elastic potential energy by a factor of 4.

Hence, the correct option is (A) " displacement ".