Kinematics/Newtons Laws Physics

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SUMMARY

The discussion focuses on solving a physics problem involving forces and directions. A 400 N force directed Northwest requires a 700 N force to be directed at S66°W to achieve a net force pointing due West. The magnitude of the resulting net force is calculated to be 923 N. Participants emphasize the importance of drawing a vector diagram and applying the sine rule for accurate calculations.

PREREQUISITES
  • Understanding of vector addition in physics
  • Knowledge of force magnitude and direction
  • Familiarity with trigonometric identities, specifically the sine rule
  • Ability to interpret vector diagrams
NEXT STEPS
  • Study vector addition and its applications in physics
  • Learn about the sine rule and its use in solving triangle problems
  • Explore vector diagrams and their significance in force analysis
  • Review Newton's laws of motion and their implications for force interactions
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Students studying physics, particularly those focusing on mechanics, as well as educators seeking to enhance their teaching methods in vector analysis and force calculations.

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Homework Statement


A 400 N force points due Northwest.

a) In what direction must a 700 N force point so that the net force points due west?
b) What is the magnitude of the net force?

Homework Equations



No Clue..

The Attempt at a Solution



Answer says its..
a) [S66`W]
b) 923 N

Thanks for helping..:)
 
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Draw a vector diagram, then use relevant information from the question to help you with the values.

you might find a/sin(a) = b/sin(b) useful here if you have learned this identity before.
 

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