## Grazes 2 years ago Word Problem

1. Grazes

2. Peter14

think about how this could happen. Two forces of 50 and 25 N, resultant force of 25 N...

3. Grazes

That's exactly what I need- a diagram. I have no idea.|dw:1367460386063:dw| This is my best guess

4. Peter14

the resultant for the two vectors is 25 N. The resultant for any two vectors has to be somewhere between$\left[ V_1-V_2 \right] and [V_1+V_2]$

5. Peter14

in this case, what is the maximum and minimum sum of these vectors?

6. Grazes

I'm doing trig. I haven't learned that yet, I don't think

7. Peter14

for this problem you don't need any of that.

8. Grazes

Then what do you need? o-o

9. Peter14

find the maximum and minimum length of the resultant.

10. Grazes

Is the dotted line I drew the resultant? And even if it is, I don't see how it can be more than one value if the shape I drew is a parallelogram.

11. Peter14

you are adding two vectors and you don't know the angle between them because that's what you're trying to find.

12. Grazes

Could you draw a diagram for me, please?

13. Peter14

|dw:1367461650410:dw|

14. Grazes

I'm lost. My teacher never used a circle to solve these types of problems.

15. Peter14

I used a circle because you don't know which way the second vector is going relative to the first one.

16. Peter14

I give up. What's 50-25?

17. Grazes

25.

18. Grazes

|dw:1367461942678:dw| Which angle do I need to find?

19. Peter14

|dw:1367462096748:dw| resultant is 25

20. Peter14

|dw:1367462207710:dw| you are supposed to find that angle

21. Grazes

What happened to 38 degrees and 10 minutes?

22. Peter14

it doesn't matter. there is only one way to get a resultant force of 25 newtons from forces of 50 N and 25 N.

23. Grazes

I will take your word for it.