What happens if you ignore the thrid for a moment and calculate the resultant of the other two?
Three forces in a plane act on an object. The forces are 7 N, 11 N, and 15 N. The angle between the 7 N and 11 N forces is 105degrees, between the 11 N and 15 N forces is 147degrees, and between the 15 N and 7 N forces is 108degrees.
a) Are the vectors in equilibrium?
b) If not, find the magnitude and the direction of the resultant force.
I can do problems with two vectors just fine, but I'm not sure how to solve with three vectors.
I can't really make any ordered pairs out of these vectors because none of them are in standard position.
If I calculated the resultant of just two vectors, let's say the 7 N and 11 N vectors, I would get:
sqrt{(11)^2 + (15)^2 - 2(11)(15)cos33degrees} = 8.32 N