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Impending state of mation is a critical border line between static and dynamic states of a body A block of mass m is supported on a rough vertical wall by applying a rough vertical wall by appying a force F as shwon in figure coefficent of static fricition between block and wall is `mu` The block under the influenace F sin`theta` may have a tendency to move upwart or it may be assumed that F `sin theta` justprevents downward fall of th block read the above prevents downward fall of the block .Read the above passage carefully and answer the following quesstions. The minimum value of force F required to keep the block stationary isA. `(mg)/(mucostheta)`B. `(mg)/(sin theta+mucostheta)`C. `(mg)/(sin theta-mucostheta)`D. `(mg)/(mu tantheta)` |
Answer» Correct Answer - b |
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