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A 1205-N uniform beam is attached to a vertical wall at one end and is supported

ID: 1288955 • Letter: A

Question

A 1205-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end.   A W = 1925-N crate hangs from the far end of the beam. Using the data shown in the drawing, find the following.

(a) the magnitude of the tension in the wire =

(b) the magnitudes of the horizontal and vertical components of the force that the wall exerts on the left end of the beam.

horizontal     = vertical     = A 1205-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1925-N crate hangs from the far end of the beam. Using the data shown in the drawing, find the following. (a) the magnitude of the tension in the wire = (b) the magnitudes of the horizontal and vertical components of the force that the wall exerts on the left end of the beam. horizontal = vertical =

Explanation / Answer

a) balancing moment about hinge point,


mgcos30 x L/2 + Wcos30 x L - Tsin(30 +50) x L = 0


1205 x cos30 /2 + 1925cos30 - Tsin80 = 0

T =2222.65 N


b) Vx = Tcos50 = 1428.69 N


Vy = 1205 + 1925 - 2222.65sin50 = 1427.35 N

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