Question

The cable shown in the following figure is subjected to the uniform loading. If the slope of the cable at point is zero, dete
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Answer #1

a)

Equation of cable is given as

y=\frac{4hx(L-x)}{L^2}

where y= dip at a point

h = maximum dip

L= length of cable

here L= 20m and h= 2 m , thereofore we get

| 4*2* _T(20 - c} c(20 - ar) 50 20一二

y=\frac{x(20-x)}{50}

Horizontal reaction at support Aor B

H_A=H_B=H=\frac{wL^2}{8h}

here\,w=16\,KN/m

H=\frac{16*20^2}{8*2}=400KN

vertical reaction at support A or B

V_A=V_B=V=\frac{wL}{2}

V=\frac{16*20}{2}=160 KN

Maximum\,tension \,in\,cable\,(T_{max})=\sqrt{V^2+H^2}

(T_{max})\,occurs\,at\,support\,A\,or\,B

(T_{max})=\sqrt{160^2+400^2}=80\sqrt{29}\,KN

Minimum\,tension \,in\,cable\,(T_{min})=H=400KN

(T_{min})\,occurs\,at\.mid\,point\,O

(T_{min})=400KN\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\ at\, O

(T_{max})=80\sqrt{29}KN\,\,\,\,\,\,\,\,\,\,\,\,\,\,at\,A\,or\,B

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