A two hinged semi-circular arches of radius R carries a concentrated load W at the crown. Assuming uniform flexural rigidity The horizontal thrust at each support will be:
1
\( \frac{W}{2\pi} \)
2
\( \frac{W}{\pi} \)
3
\(\frac{4}{3}\left( {\frac{{wR}}{\pi }} \right)\)
4
\( \frac{W}{2} \)