Kuliah Gaya Koplanar Paralel - Statika Kuliah 3 (1) Vid

Introduction

This tutorial provides a step-by-step guide to understanding coplanar parallel forces as discussed in the Statika course. It is designed for students and anyone interested in the principles of statics, particularly in analyzing forces acting on a body in a two-dimensional plane.

Step 1: Understand the Concept of Coplanar Forces

• Definition: Coplanar forces are forces that lie within the same plane.
• Importance: Recognizing these forces is crucial for analyzing static equilibrium in structures.
• Applications: Used in engineering, construction, and physics to ensure structures can withstand loads without movement.

Step 2: Identify Parallel Forces

• Definition: Parallel forces act in the same or opposite directions and do not intersect.
• Examples:
  • Two forces acting on a beam: one pushing down and the other pushing up.
• Visual Representation: Draw a diagram with forces represented by arrows showing their direction and magnitude.

Step 3: Apply the Equilibrium Condition

• Static Equilibrium: For a body to be in static equilibrium, the sum of forces must equal zero.
• Mathematical Expression: [ \sum F = 0 ]
• Example Calculation:
  • If a downward force of 100 N is applied and an upward force of 100 N is also applied, the system is in equilibrium.

Step 4: Calculate Resultant Force

• Finding Resultant Force: For parallel forces, sum up the magnitudes considering their directions.
• Formula:
  • If forces are in the same direction: [ F_{resultant} = F_1 + F_2 ]
  • If forces are in opposite directions: [ F_{resultant} = |F_1 - F_2| ]
• Tip: Always indicate direction when calculating the resultant.

Step 5: Consider Moments (Torque)

• Understanding Moments: A moment is the rotational effect of a force about a point.
• Formula: [ M = F \times d ] where M is the moment, F is the force, and d is the distance from the point of rotation.
• Application: Analyze how forces can cause rotation around a pivot point.

Conclusion

In this tutorial, we've explored coplanar parallel forces, their equilibrium conditions, and how to calculate resultant forces and moments. These principles are foundational for further studies in statics and structural analysis. For further learning, consider applying these concepts to real-world engineering problems or simulations.