Suma de FUERZAS FÍSICA Ejercicios RESUELTOS [Fuerza Resultante de Vectores Perpendiculares]

Understanding Vector Forces and Their Summation

Introduction to Vector Forces

• The video introduces the concept of vector forces, explaining how to sum or subtract them based on their directions.

• Emphasis is placed on understanding the theory before moving on to practical exercises.

Types of Force Interactions

Same Direction Forces

• When two forces act in the same direction (e.g., pushing a box forward), they combine to create a resultant force that is greater than either individual force.

• The resultant force (FR) is calculated by summing the magnitudes of both forces (F1 + F2).

Opposite Direction Forces

• If one force acts in one direction and another in the opposite, the resultant force depends on which force is stronger.

• The formula for calculating this scenario involves subtraction: FR = F1 - F2, where F1 is larger than F2.

Perpendicular Forces

• In cases where forces act at angles (e.g., one pushing forward and another sideways), the resultant forms a diagonal path.

• This can be calculated using Pythagorean theorem: FR = √(F1² + F2²).

Practical Exercises with Vector Forces

First Exercise Example

• A box experiences two forces: 10 Newtons pulling in one direction and 5 Newtons in another.

• Since these are opposing forces, we calculate the resultant as FR = 10N - 5N = 5N.

Second Exercise Example

• Another example involves a box being pushed upwards and sideways.

• Here, we identify it as case three and use Pythagorean theorem for calculation: FR = √(6² + 5²).

Third Exercise Example

• In this final exercise, both forces push towards the same direction; thus, we sum them up.

• Resultant force calculation yields FR = 17N when adding both applied forces together.

Conclusion