Question

VECTORS HELP ):
Three forces with magnitudes 100, 50, and
80 lb, act on an object at angles of 50, 160, and 20, respectively.find the direction and magnitude of the resultant
force.

Answer 1

do you know how to start this problem?

Answer 2

By drawing a pic? (x

Answer 3

lets start with that

Answer 4

what you have to do is break up the vectors into components. do you know how to do that?

Answer 5

dont you mean 80 not 20..?

Answer 6

oops, yes

Answer 7

lets fix that

Answer 8

do you know how to decompose these vectors?

Answer 9

um no..D:

Answer 10

what you have to do is break up each one into its x piece and its y piece
example:

after you do this for all 3, add all the horizontal ones together, then add all the vertical ones together, then thats the new vector
try to decompose one of the other ones
it doesnt matter if the answer is in terms of a trig function (like how i left it) or a decimal