Question

The horizontal thrust at support A in a three hinged arch shown in the given figure is

• A. 15 kN
• B. 20 kN
• C. 10 kN
• D. 5 kN

Answer 1

The correct option is C 10 kN

$M_A=0$

$V_B\times 20=2\times 10\times 5$

$V_B=5kN,V_A=15kN$

$M_C=0\text{(for left part)}$

$15\times 10-H_A\times 5-2\times 10\times 5=0$

$H_A=10kN$