Figure shows a cubical block of side 10 cm and relative density 1.5 suspended by a wire of cross sectional area 10⁻⁶ ~m ^2 . The breaking stress of the wire is 7 10^6 ~N / m ^2 . The block is placed in a beaker of base area 200 ~cm ^2 and i

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Figure shows a cubical block of side 10 cm and relative density 1.5 suspended by a wire of cross sectional area 10⁻⁶ ~m ^2 . The breaking stress of the wire is 7 10^6 ~N / m ^2 . The block is placed in a beaker of base area 200 ~cm ^2 and initially i.e. at t =0 , the top surface of water & the block coincide. There is a pump at the bottom corner whichejects 2 ~cm ^3 of water per sec. Find the time (in sec) at which t

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Correct answer: 100

aligned & T_ =7 10^6 10⁻⁶ ~N =7 ~N & F_ B_ =(15-7)=8 ~N aligned Water level its be lowered =2 ~cm Area occupied by water level at the top =100 ~cm ^2 2 t =100 2 t =100 sec

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