A heavy iron bar, of weight W is having its one end on the ground...

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 : 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

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

Options

A $\mathrm{W} \cos \theta$
B $\frac{W}{2}$
CW
D $W \sin \theta$

Correct answer

B. $\frac{W}{2}$

Step-by-step solution

R=

net reaction force by shoulder Balancing torque about pt of contact on ground:

\begin{aligned} & \mathrm{W}\left(\frac{\mathrm{L}}{2} \cos \theta\right)=\mathrm{R}(\mathrm{L} \cos \theta) \\ & \Rightarrow \mathrm{R}=\frac{\mathrm{W}}{2}\end{aligned}

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