Structural Engineering & Construction Situation 30 (PH)

Описание: PAST BOARD EXAM PROBLEMS
Structural Engineering & Construction
Situation 30
To prevent the ladder from sliding down, the man exerts a horizontal force at C. Given: L1 = 4.5m, L2 = 1.5m, ⌀ = 30°
1. Find the horizontal force at C, which the man should exert if the weight of the ladder is 500 N. Assume that surface A and B are frictionless. (577.7 N)
2. If the weight of the ladder is 500 N, what is the reaction at A? Surface A and B are frictionless. (500 N)
3. Find the maximum weight of the ladder that can be held from sliding if the man exerts force C = 200 N. Coefficient of friction at A is 0.30 and at B is 0.20. (421 N).

Credits:
1. Intro Template:    • (FREE) 2D Square Intro (60 fps - No Text) ...  
2. Music:
2.1 Driven to Success by Scott Holmes, Source: http://www.freemusicarchive.org
2.2 Instrumental (Guitar) by Carl Ernest Tayag, check his channel:    / @ninja35ful  
3. Reference for the problem: Civil Engineering Reference for Licensure Examination, Volume 4, 1st Edition by DIT Gillesania (GERTC Review).

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