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The image shows a structural mechanics problem (possibly involving statics) labeled as "Soal 1." It features a beam with a load system:

1. A force \( P_1 \) applied at an angle of \( 60^\circ \) with respect to the horizontal.
2. A vertical force \( P_2 \) applied on the right side of the beam.
3. The beam is supported at two points: 
   - A pin support at the left end (labeled \( V_a \) for vertical and \( H_a \) for horizontal components).
   - A roller support at the right end (labeled \( V_b \) for the vertical reaction).
4. The beam is segmented with the lengths \( L_1 \), \( S \), and \( L_2 \).

This setup seems to be asking for reaction forces at the supports and potentially the internal forces in the beam.

Would you like me to help calculate the reaction forces or provide more details on solving this type of problem?

### Expanded questions:
1. How do you resolve forces into horizontal and vertical components for angled forces like \( P_1 \)?
2. What equations are used to determine the reaction forces in a beam?
3. What role does the pin support and roller support play in determining the number of reaction forces?
4. How would you calculate the moment about a point for this beam system?
5. Can you identify if the beam is statically determinate based on the number of equations and unknowns?

**Tip:** Always check if a beam is statically determinate by ensuring the number of reactions equals the number of equilibrium equations (typically 3 in 2D: sum of forces in \( x \), sum of forces in \( y \), and sum of moments).

Analyze the beam system with two supports and external forces applied at different locations and angles.

This problem involves calculating the reaction forces and moments for a beam with supports, subjected to angled and vertical forces. Key concepts include force resolution, static equilibrium, and moments, suitable for undergraduate-level statics problems.

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