4- Coefficient of friction is the A. Angle between normal reaction and the resultant of normal reaction and the limiting friction B. Ratio of limiting friction and normal reaction > C. The friction force acting when the body is just about to move D. The friction force acting when the body is in motion y

4- Coefficient of friction is the A. Angle between normal reaction and the resultant of normal reaction and the limiting friction B. Ratio of limiting friction and normal reaction > C. The friction force acting when the body is just about to move D. The friction force acting when the body is in motion y

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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6 STATICS ENGINEERS MECHANICS CHAPTER Lecture Notes: 20 b1-3.3) Body A has a mass of 25 kg and body B has a mass of 50 kg. The coefficient of friction for all surfaces is 0.20. Find the minimum force P that can be applied to B without disturbing the equilibrium of the system. (S) A.
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6/47 A block of mass mo is placed between the vertical wall and the upper end A of the uniform slender bar of mass m. If the coefficient of static friction is µg be- tween the block and the wall and also between the block and the bar, determine a general expression for the minimum value 0min Oof the angle 0 for which the block will remain in equilibrium. Evaluate your expression for the conditions µ = 0.5 and %3D т (a) mo 0.1, m (b) mo 1, and m (c) mo 10. %3D For each case, state the minimum coefficient of sta- tic friction (u)B necessary to prevent slippage at B. Ans. (a) 0min = 61.2°, (µ,)B = 1.667 (unusual!) (b) 0min = 45°, (µ)B = 0.667 (c) 0min = 10.30°, (µ,)B = 0.0952 %3D %3D %3D %3D %3D mo m (Ha)B Problem 6/47
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