Answer to Question #202512 in Mechanical Engineering for Gugu

Question

In a jib crane, the jib and tie rod are 6 m and 5 m long respectively. The height of the crane post is 3 m. When a weight (W) 317 N is suspended from the crane and the tie rod remains horizontal.

Determine the tension in Tie rod (only magnitude, in N)?

Answer 1

h_r = 6m - 3m = 3m

tie rod = 5m

$\theta = tan^{-1}(\dfrac35)$

$\theta = 31°$

$\cos 31°= \dfrac{317}{T}$

$T =\dfrac{317}{\cos31°}= 369.8\ N$