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Three bodies each of mass `2kg` are arranged as shown in figure. The coefficient of kinetic frication between `B` & `C` is `0.4` and between `C` and ground is `0.1`. Then choose the correct option(s). A. The acceleration of block `A` is `1 m//s^(2)`B. The acceleration of block `A` is `3 m//s^(2)`C. The acceleration of block `C` is `2 m//s^(2)`D. The acceleration of block `B` is `1 m//s^(2)` |
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Answer» Correct Answer - B::C For `A` & `B` `20 - T = 2a` `T - 8 = 2a` `a_(B) = 3 m//s^(2)` For `C` `a_(C) = 2 m//s^(2)` `a_(BC) = 1 m//s^(2)` From equation `S_(BC) = 0 + (1)/(2) a_(BC)t^(2)` `rArr 2 = (1)/(2) xx 1 xx t^(2)` `t = 2 sec` `S_(C) = 0 + (1)/(2)a_(C)t^(2)` `S_(C) = 4m` |
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