If the value of $P$ is 180 lb.
Determine the angle $\theta$ at which it must be inclined with the smooth plane to hold 300-lb box in equilibrium.
$\theta =$ 33.56°
![diagram](./images/310-311-box-in-incline.png)
If the value of $P$ is 180 lb.
Determine the angle $\theta$ at which it must be inclined with the smooth plane to hold 300-lb box in equilibrium.
$\theta =$ 33.56°