Question

Block of mass 'm' is lowered from natural length position of spring, slowly by an external agent in equilibrium position. The extension present in the massless spring was asked from two students.

Student A:

1/2kx^2=mgx ; therefore,x=2mg/k

Student B:

mg=kx ; therefore,x=mg/k

​ANS-Student A is incorrect,Student B is correct.

Why is student A wrong??

Serious ans only pls

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Answer 1

Explanation:

Hope you understand thankyou