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An iron block and a wooden block are positioned in a vessel containing water as shown in the figure. The iron block (1) hangs from a massless string with a rigid support from the top while the wooden block floats being tied to the bottom through a massless string.  Now, if the vessel starts accelerating upwards

 

a
tension in the string 1 will decrease
b
tension in the string 1 will increase
c
tension in string 2 will decrease
d
tension in the string 2 will increase

detailed solution

Correct option is B

Since geff, increases tension in both strings will increase.Tiron=M(g+a)+Fb Twood=m(g+a)+Fb

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