A heavy iron bar, of weight $W$ is having its one end on the ground and the other on the shoulder of a person. The bar makes an angle $\theta$ with the horizontal. The weight experienced by the person is :\\
(1) $\mathrm { W } \cos \theta$\\
(2) $\frac { W } { 2 }$\\
(3) W\\
(4) $W \sin \theta$