Problem 4.6: 4.55. The cantilever beam is built into a wall at O. Neglecting the weight of the beam, determine the support reactions at O. 120 NA 120 N 100 N 400 N 100 N M 400 N - X 4 m 4 m 3 m 360 N...

How do I know if the forces are positive or negative

Problem 4.6: 4.55.<br>The cantilever beam is built into a wall at O. Neglecting the weight of the beam, determine the support<br>reactions at O.<br>120 NA<br>120 N<br>100 N<br>400 N<br>100 N<br>M<br>400 N<br>- X<br>4 m<br>4 m<br>3 m<br>360 N<br>200 N<br>Ry<br>360 N<br>200 N<br>4 m<br>4 m -<br>3 m-<br>EF. = 0<br>EF, = 0<br>E Mo = 0<br>Rx<br>360 – 400 = -40 N<br>Ry<br>= 200 – 120 – 100 = -20 N<br>M = 800 + 540+ 600 – 960 – 1100 = -120 Nm<br>Thus, reaction at O is –40i – 20j N and a clockwise couple 120 Nm.<br>

Extracted text: Problem 4.6: 4.55. The cantilever beam is built into a wall at O. Neglecting the weight of the beam, determine the support reactions at O. 120 NA 120 N 100 N 400 N 100 N M 400 N - X 4 m 4 m 3 m 360 N 200 N Ry 360 N 200 N 4 m 4 m - 3 m- EF. = 0 EF, = 0 E Mo = 0 Rx 360 – 400 = -40 N Ry = 200 – 120 – 100 = -20 N M = 800 + 540+ 600 – 960 – 1100 = -120 Nm Thus, reaction at O is –40i – 20j N and a clockwise couple 120 Nm.

Jun 11, 2022

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Problem 4.6: 4.55. The cantilever beam is built into a wall at O. Neglecting the weight of the beam, determine the support reactions at O. 120 NA 120 N 100 N 400 N 100 N M 400 N - X 4 m 4 m 3 m 360 N...

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