91Ó°ÊÓ

Two equal weights each of \(1000 \mathrm{~N}\) is supported by a flexible string as shown. Find the tensions \(\left[T_{A B}=2236 \mathrm{~N}, T_{B C}=2000 \mathrm{~N}, T_{C D}=2236 \mathrm{~N}\right]\) in the portion \(A B, \& C\) and \(C D\) of the string.

Determine the axial forces produced in the hinged bars as shown in Fig. P.2.8 due to the load \(P\) acting at \(D\).

A prismatic bar \(A B\) of length \(l=5 \mathrm{~m}\) und of negligible weight is hinged at \(A\) and supported at \(B\) by a string that pasges over a pulley \(C\). A vertical load of \(60 \mathrm{kN}\) applied at the end \(B\) of the bar is supported by a force \(P\) applied to the string. Find the axial force in the bar and the limiting value of the tension \(T\) when the bar appronches vertical position. Distance between the hinge and \(\left[S_{A B}=50 \mathrm{kN}(C), T=10 \mathrm{kN}\right]\) the pulley \(h=6 \mathrm{~m}\).