7.45 The movable bracket of negligible weight is mounted on a vertical post. The coefficient of static friction between the bracket and the post is 0.2. Deter- mine the smallest ratio b/a for which the bracket can support the vertical force P. Assume that the diameter of the post is negligible. (Note: Because the result is independent of P, the bracket is said to be self-locking.)
7.45 The movable bracket of negligible weight is mounted on a vertical post. The coefficient of static friction between the bracket and the post is 0.2. Deter- mine the smallest ratio b/a for which the bracket can support the vertical force P. Assume that the diameter of the post is negligible. (Note: Because the result is independent of P, the bracket is said to be self-locking.)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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7.45 The movable bracket of negligible weight is mounted on a vertical post. The coefficient of static friction between the bracket and the post is 0.2. Deter- mine the smallest ratio b/a for which the bracket can support the vertical force P. Assume that the diameter of the post is negligible. (Note: Because the result is independent of P, the bracket is said to be self-locking.)
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