The 80-lb boy stands on the beam and pulls on the cord with a force large enough to just cause him to slip. If the coefficient of static friction between his shoes and the beam is (µ)p = 0.4, which of the following the %3D D reactions at A and B. The beam is uniform and has a weight of 100 lb. Neglect the size of the pulleys and the thickness of the beam. a) Ay = 467.1 lb, Bx = 370 lb, B, = 221.5 lb %3D b) Ay = 479.3 lb, Bx = 381 lb, B, = 251.2 lb 5 ft- -3 ft- c) Ay = 4347 lb, B = 354 lb, B, = 237.8 lb %3D %3D %3D d) A, = 451.1 lb, Bx = 372 lb, B, = 281.7 lb %3D e) A, = 473.1 lb, Bx = 358 lb, By = 271.6 lb
The 80-lb boy stands on the beam and pulls on the cord with a force large enough to just cause him to slip. If the coefficient of static friction between his shoes and the beam is (µ)p = 0.4, which of the following the %3D D reactions at A and B. The beam is uniform and has a weight of 100 lb. Neglect the size of the pulleys and the thickness of the beam. a) Ay = 467.1 lb, Bx = 370 lb, B, = 221.5 lb %3D b) Ay = 479.3 lb, Bx = 381 lb, B, = 251.2 lb 5 ft- -3 ft- c) Ay = 4347 lb, B = 354 lb, B, = 237.8 lb %3D %3D %3D d) A, = 451.1 lb, Bx = 372 lb, B, = 281.7 lb %3D e) A, = 473.1 lb, Bx = 358 lb, By = 271.6 lb
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The 80-lb boy stands on the beam and pulls on the cord
with a force large enough to just cause him to slip. If the
coefficient of static friction between his shoes and the
beam is (u)p = 0.4, which of the following the
%3D
D
reactions at A and B. The beam is uniform and has a
weight of 100 lb. Neglect the size of the pulleys and the
thickness of the beam.
a) Ay = 467.1 lb,B, =
= 467.1 lb, Bx = 370 lb, B, = 221.5 lb
%3D
b) Ay = 479.3 lb, Bx = 381 lb, B, = 251.2 lb
c) Ay = 4347 lb, B = 354 lb, B, = 237.8 lb
5 f -
-3 ft-
-4 ft-
%3D
%3D
d) A, = 451.1 lb, B, = 372 lb, B, = 281.7 lb
%3D
e) Ay = 473.1 lb, Bx =
358 lb, By = 271.6 lb
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