# #

A tracked mining dril raises its wireline tower to begin excavating. $$OAB$$ moves about point $$O$$, while section $$AB$$ extends out from $$OA$$.

For the following conditions: $$d = {{params.d}} ft$$, $$\theta = {{params.theta}}^{\circ}$$, $$\dot{\theta} = {{params.dot_theta}} deg/s$$, $$\ddot{\theta} = {{params.ddot_theta}} deg/s^2$$, $$l = {{params.l}} ft$$, $$\dot{l} = {{params.dot_l}} ft/s$$, $$\ddot{l} = {{params.ddot_l}} ft/s^2$$

$$\dot{l}$$ and $$\ddot{l}$$ are the first and second-time derivatives of the extending section AB.

## Part 1#

Determine the $$\hat{r}$$ component of the velocity of the wireline tower at $$B$$.

## Part 2#

Determine the $$\hat{\theta}$$ component of the velocity of the wireline tower at $$B$$.

## Part 3#

Determine the $$\hat{r}$$ component of the acceleration of the wireline tower at $$B$$.

Determine the $$\hat{\theta}$$ component of the acceleration of the wireline tower at $$B$$.