Calculating the net force acting on object in diagram

Evangeline101 · May 4, 2016

Homework Statement

Calculate the net force acting on each object in the following diagrams. Show your work.

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c²= a² + b² - 2abcosC
c = (a² + b² - 2abcosC) ^1/2

c = [ (32.0 N)² + (38.0 N)² - 2 (32.0 N) x (38.0 N) cos 55° ] ^1/2
c = 32.8 N

sinA/ 38.0 N = sin55° / 32.8 N

A= 72°

F_net = 32.8 N [ N 72° E]

Can someone please check my answer and tell me if it is correct? Thanks.

cnh1995 · May 4, 2016

I'm having a deja-vu feeling.. Check out this thread from the beginning.
https://www.physicsforums.com/posts/5410483/

Evangeline101 · May 4, 2016

Okay, thanks for linking that thread.