A block is kept submerged in water by a spring attached to the bottom of the vessel. The spring is compressed in equilibrium. The vessel starts moving downwards with an acceleration a(
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a
Decrease
b
remain unchanged
c
become zero
d
Increase
answer is D.
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Detailed Solution
(D) mg=k(l0−l1)+U =k(l0−l2)+Ug(g−a)+ma ⇒k(l2−l1)+Uga−ma=0 ⇒k(l2−l1)=(m−Ug)a , where m>Ug ⇒l2>l1
A block is kept submerged in water by a spring attached to the bottom of the vessel. The spring is compressed in equilibrium. The vessel starts moving downwards with an acceleration a(