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Two spheres each of volume 250 cc but of relative densities 0.8 and 1.2 are connected by a string and the combination is immersed in a liquid in vertical position as shown in the figure. The tension in the string k18 N. The value of k is ________. (Given, g=10 ms-2)

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answer is 9.

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Detailed Solution

T+mg=BF1 Or T+(0.8)(250)g=(250)ρLg......(i)T+BF2=m2g Or T+(250)ρL(g)=(1.2)(250)(g)........ (ii) From equations (i) and (ii), T=0.5N∴ k18=12⇒k=9

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Two spheres each of volume 250 cc but of relative densities 0.8 and 1.2 are connected by a string and the combination is immersed in a liquid in vertical position as shown in the figure. The tension in the string k18 N. The value of k is ________. (Given, g=10 ms-2)