SIMPLE vector problem,, just making sure

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SUMMARY

The discussion revolves around solving a vector problem involving three vectors: vector A at 66.28 degrees north of east, vector B at 40.56 degrees north of west, and vector C with a magnitude of 46.8 units directed south. The participants confirm that the problem is solvable using trigonometric principles, specifically noting that there are two equations and two unknowns. The main challenge highlighted is determining the magnitudes of vectors A and B to find the resultant vector's components, magnitude, and angle with the x-axis.

PREREQUISITES
  • Understanding of vector components and their representation in a Cartesian coordinate system
  • Knowledge of trigonometric functions, particularly sine and cosine
  • Familiarity with the concept of resultant vectors and vector addition
  • Basic skills in solving equations with multiple unknowns
NEXT STEPS
  • Study vector decomposition techniques to resolve vectors into their components
  • Learn about the Law of Cosines and Law of Sines for solving triangles
  • Explore the use of graphical methods for vector addition
  • Practice problems involving resultant vectors and angles in physics contexts
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone involved in vector analysis or solving vector-related problems in engineering and mathematics.

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Homework Statement


vector A = 66.28 degrees north of east, unknown magnitude
vector B = 40.56 degrees north of west, unknown magnitude
vector C = 46.8(magnitude), south

all vectors start form the origin
their magnitudes are given in arbitrary units

find:
a) components of resultant
b) magnitude of resultant
c) angle w/ the x-axis of the resultant

2. The attempt at a solution
i want to make sure if this problem doesn't lack any given..
can this problem be solve?
 
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Yes it is solvable. You have 2 eqns and 2 unkowns.
 
Hahaha,, i don't know what happened on me! yes, ur right,, thanks,, it's solvable.. just simple trigonometry
 
so it's solvable,, thanks...

but I'm stucked in getting the magnitudes of vectors A and B

i'l appreciate any help...
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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