Equilibrio 2D y 3D
Quiz
•
Physics
•
University
•
Practice Problem
•
Hard
Alfredo Salas Ramírez
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2 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
La barra tiene una longitud de 1 m y su peso W actúa en su punto medio. La distancia b = 0.75 m y el ángulo α = 30°. La constante del resorte es k =100 N/m, y el resorte no está elongado cuando la barra se encuentra en posición vertical. Determine W y las reacciones en A.
W = 46.2 N, Ax=22.3N, Ay = 61.7N
W = 64.9 N, Ax= 50 N, Ay = 86.6 N
W = 64.9 N, Ax= 86.6 N, Ay = 50 N
W = 46.2 N, Ax= 22.3 N, Ay = 37.5 N
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Una fuerza vertical de 80 lb actúa sobre el cigüeñal. Determine la fuerza horizontal P de equilibrio que debe aplicarse a la manivela y las componentes x, y, z de reacción en la chumacera lisa A y en la chumacera de empuje B. Estos cojinetes están alineados correctamente y ejercen sólo fuerzas de reacción sobre la flecha.
P = 80 lb, Bx = 35.7, By =0, Bz = 40 lb, Ax =136 lb, Az = 40 lb
P = 100 lb, Bx = 35.7, By =0, Bz = 40 lb, Ax =136 lb, Az = 40 lb
P = 100 lb, Ax = 35.7, Ay =0, Az = 40 lb, Bx =136 lb, By =0, Bz = 40 lb
P = 80 lb, Ax = 35.7, Ay =0, Az = 40 lb, Bx =136 lb, By =0, Bz = 40 lb
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