Two forces act on a point object 100 N and 100 N and the angle between them is 170. Solve for the resultant vector if one of the forces is in the positive x direction.

Question

anonymous · Answer

How do I solve for this?

amistre64 · Answer

the same way as the last one ... the process is the same, only the value of the vectors change

anonymous · Answer

@amistre64 is 17.43 the answer?

souvik · Answer

$$F _{net}=\sqrt{F ^{2}_{1}+F ^{2}_{2}+2F _{1}F _{2}\cos \theta }$$

amistre64 · Answer

its asking for a vector, not a force

amistre64 · Answer

resultant vector = vector 1 + vector 2

amistre64 · Answer

v1 =   100 cos(0)   i +   100 sin(0) j
v2 = 100 cos(170) i + 100 sin(170) j

anonymous · Answer

@amistre64  v1=100 
v2= -81.12

anonymous · Answer

resultant vector= 18.88 ?

amistre64 · Answer

that is not what the vectors mean;  i and j denote seperate components of a vector

amistre64 · Answer

the vector (3,4)  does not equal 7

amistre64 · Answer

the vector (3,4)  can be written as:  3i + 4j,  which is not 7

amistre64 · Answer

100cos(0) i + 100 sin(0) j + 100 cos(170) i + 100 sin(170) j

consider the i and j parts as "variables" and combine "like terms"

amistre64 · Answer

stacking the vectors tends to organize them better, but writting them all out in a line is fine as well

anonymous · Answer

ok thanks!