Question

a.4F/3K
b.8F/3K
c.F/3K
d.none​

Answer 1

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★ your answer is option 1

8mg/3k

EXPLANATION :-

→ First of all find m(common)

=> m1m2/(m1 +m2)

=> 2m*m/(2m+m)

=> 2m/3

now,

Assume that highest elongation be x .

Friction = 0

so,

reduction potential = potential energy stored in spring.

→ potential energy in spring = 1/kx^2

★ m'gx = 1/2kx^2

→ × = 2m'g/k

here, m' = 2m/3

so,

x = 4mg/k = 4f/k


happy to help!!

:)