NON coplanar forces, please i thanks

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AI Thread Summary
The discussion focuses on calculating the resultant of three coplanar concurrent forces with specified magnitudes and directions. The user initially sums the forces incorrectly, assuming they all act in the same direction, leading to confusion about resolving vectors. Participants emphasize the need to break down the forces into their vertical and horizontal components for accurate results. The user expresses difficulty in understanding vector resolution and seeks further assistance. Clarification on vector addition and direction is crucial for solving the problem correctly.
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Homework Statement



Find the resultant of three coplanar concurrent forces, f1 north a magnitude of 8 grams, F2 of magnitude 12 grams and acting southwest f3 of magnitude 5 grams and acting southeast Find the resultant in an easterly and northerly direction.

known values:
F1 = 8 grams North
F2 = 12 grams Southwest
F3 = 5 grams Southeast

Homework Equations


R=f1+f2+f3

N

/|\ (arrow up sorry don't know how to put a diagram here)
|
| F1 = 8 grams
|
|
/ \
/ \ F3 = 5 grams
/ \
F2=12 grams / \
V V

The Attempt at a Solution



In norhtern resultant: R=8 + 12 + 5 = 25 grams
In eastern am confused if i am going to add it again? and in my first eauation don't know if am right? please help me thanks
 
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oh no... my diagram... :( sorry this is my first time to join in a forum so don't know how to put a diagram.. but please help me thanks
 
Your northern resultant is wrong. All the forces are not acting along the same direction.
Do you know how to resolve the vectors along vertical and horizontal direction?
 
rl.bhat said:
Your northern resultant is wrong. All the forces are not acting along the same direction.
Do you know how to resolve the vectors along vertical and horizontal direction?
thanks for the reply, actually, no, i tried to search anything in the net but i can't understand.. please help me... thanks again
 

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