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wrote...
Posts: 752
3 days ago
I would like to know on what formula is to calculate resultant forces from 3 objects in 2-D.

Object 1 : Force = 1 and Angle = 0

Object 2 : Force = 1 and Angle = 136

Object 3 : Force = 1 and Angle = 236

Does anyone have any suggestions?
Thanks in advance for any suggestions
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wrote...
Staff Member
3 days ago
Sounds like you're adding vectors. You'd have to break down each force into its x-y components using trigonometric ratios.
- Master of Science in Biology
- Bachelor of Science (Biology)
- Bachelor of Education
Answer accepted by topic starter
wrote...
Educator
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Posts: 24211
3 days ago
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Hi oem7110

First video shows how to find the components of a vector:



Second video shows how to add two vectors together:



Third video, three or more vectors:



If you can't figure it out, I'll write you a detailed solution.
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wrote...
3 days ago Edited: 3 days ago, oem7110
Thanks, to everyone very much for suggestions (^v^)
wrote...
Educator
3 days ago
Good work.

I have the solution for you.

Step 1. Plot the point on the polar plane or x-y plane.

Step 2. Draw the vector from the origin to the point.

Step 3. Use the tangent function to relate the x and y coordinates. Tangent relates opposite over adjacent within a right triangle.

Step 4. Use inverse tangent to find the angle.

Step 5. If the vector lies in the third quadrant (as shown), add 180 degrees to the angle you found in Step 4.

A similar example is shown in the video below:



Let me know if you need more assistance
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