InterviewSolution
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InterviewSolution
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A uniform cube of mass `m` and side a is placed on a frictionless horizontal surface. A vertical force `F` is applied to the edge as shown in Fig. Match the following (most appropriate choice) : (a)`mg//4 lt F lt mg//2` (i) Cube will move up. (b) `F gt mg//2` (ii) Cube will not exhibit motion. (c ) `F gt mg` (iii) Cube will begin to rotate and slip at `A`. (d) `F = mg//4` (iv) Normal reaction effectively at `a//3` from A, no motion. A. `Ato2,Bto3,Cto1,Dto4`B. `Ato1,Bto2,Cto3,Dto4`C. `Ato4,Bto3,Cto2,Dto1`D. `Ato3,Bto4,Cto1,Dto2` |
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Answer» Correct Answer - A Cube has no motion if `Fxxa=(mga)/2` `:. F=(mg)/2` Cube rotates when `Fxxa gt mga/2` `:. F gt (mg)/2` When `(mg)/2 lt F lt (mg)/2` there is no motion when `F.(mg)/2` cube moves When `F gt mg` cube moves up when `F=(mg)/2` no motion |
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