Problem: Law of Parallelogram of Forces [Help me]
problem: Given two forces of magnitude 10kN and 20kN, are having a resultant of 15kN. Find the angle between two forces and the direction of the resultant 😀
We know the formula:
for resultant direction:
A (alpha) = tan^-1 ((P sin @) / (P cos @ + Q))
But if we chose wrong "P" and "Q" then we won't get the correct answer!
My question is: In the book, the writer assigned 20kN to "P" and 10kN to "Q"
But if I take P = 10kN and Q = 20kN then the answer will be different,
How do I decide which is "P" force and which one is "Q" force? 😀
Please help 😔