Math Problem Statement

hitunglah resultan

hitunglah resultan

Solution

To find the resultant force of the three forces in the image, we need to resolve each force into its horizontal (xx-component) and vertical (yy-component), and then sum up the components to find the net force in both directions.

Given dataTo find the resultant force of the three forces in the image, we need to resolve each force into its horizontal (xx-component) and vertical (yy-component), and then sum up the components to find the net force in both directions.

Given

  • F1=2NF_1 = 2 \, \text{N} at 4545^\circ
  • F2=4NF_2 = 4 \, \text{N} at 6060^\circ
  • F3=10NF_3 = 10 \, \text{N} at 30-30^\circ

Step 1: Resolve each force into components.

  1. Force F1F_1:

    • F1x=F1cos(45)=2cos(45)F_{1x} = F_1 \cos(45^\circ) = 2 \cos(45^\circ)
    • F1y=F1sin(45)=2sin(45)F_{1y} = F_1 \sin(45^\circ) = 2 \sin(45^\circ)
  2. Force F2F_2:

    • F2x=F2cos(60)=4cos(60)F_{2x} = F_2 \cos(60^\circ) = 4 \cos(60^\circ)
    • F2y=F2sin(60)=4sin(60)F_{2y} = F_2 \sin(60^\circ) = 4 \sin(60^\circ)
  3. Force F3F_3:

    • F3x=F3cos(30)=10cos(30)F_{3x} = F_3 \cos(-30^\circ) = 10 \cos(-30^\circ)
    • F3y=F3sin(30)=10sin(30)F_{3y} = F_3 \sin(-30^\circ) = 10 \sin(-30^\circ)

Step 2: Calculate the components.

I will now calculate the components of each force.The components of the resultant force are:

  • Fx=12.07NF_x = 12.07 \, \text{N}
  • Fy=0.12NF_y = -0.12 \, \text{N}

The resultant force has a magnitude of approximately 12.08N12.08 \, \text{N}, and it makes an angle of 0.58-0.58^\circ with the positive XX-axis, meaning it is almost aligned with the horizontal axis, slightly pointing downwards.

Would you like further details on any part of this calculation, or do you have any additional questions?

Here are five related questions to consider:

  1. How would the resultant change if one of the forces was doubled?
  2. What is the physical significance of the negative angle of the resultant?
  3. Can you find the equilibrium force that would balance these three forces?
  4. How does changing the angle of F3F_3 affect the overall resultant?
  5. What would happen if all forces were applied at 9090^\circ intervals?

Tip: Always break forces into components when dealing with non-parallel vectors for easier calculation of the resultant.

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Math Problem Analysis

Mathematical Concepts

Vector Resolution
Trigonometry
Force Components

Formulas

Fx = F * cos(θ)
Fy = F * sin(θ)
Resultant Force = √(Fx² + Fy²)
Angle = arctan(Fy / Fx)

Theorems

Pythagorean Theorem
Trigonometric Functions

Suitable Grade Level

Grades 11-12