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ques 13

Dear Student,

Let V be the volume of wood

B u o y a n t f o r c e = w e i g h t o f w o o d \frac{ρ V g}{3} = 6 \times g ρ V g = 18 g - - - - - e q 1 a f t e r e x t r a w e i g h t i s p u t ρ V g = 6 g + w (w = e x t r a w e i g h t) p u t t i n g ρ V g f r o m e q 1 18 g = 6 g + w w = 12 g h e n c e e x t r a w e i g h t h a s m a s s o f 12 k g

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