4. Una viga uniforme de masa m se inclina en un ángulo θ con la horizontal (gura 4). Su extremo superior
produce una inclinación de 90 grados
en una soga muy rugosa amarrada a una pared, y su extremo inferior
descansa sobre un suelo rugoso.
a) Sea µ s el coefciente de fricción estática entre viga y suelo. Suponga que µ s es menor que la cotangente
de θ. Determine una expresión para la masa máxima M que se puede suspender desde lo alto antes
de que la viga se deslice.
b) Determine la magnitud de la fuerza de reacción en el suelo y la magnitud de la fuerza que ejerce la
viga sobre la soga en P en términos de m, M y µ s.

I do not know what to do I am just here to get an answer so I can get my stuff done to graduate but this stuff is frustrating and I am confused and don't know what to do try my best to answer the questions that you may have for me but this is frustrating thank you have a good day

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation:

33: i think it’s b