Net Force on Bolt Problems

  • Thread starter Dr Meow
  • Start date
  • #1
13
0

Homework Statement



Four forces act on bolt A as shown. Determine the net force (in Newtons) and direction (in degrees upward from the x-axis) acting on the bolt.

72559.jpg


Homework Equations


Law of Sines: a/sinA = b/sinB = c/sinC
Law of Cosines: a^2= b^2 + c^2 - 2bccosA


The Attempt at a Solution


I am totally lost, I really don't know where to even start.
 

Answers and Replies

  • #2
598
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You can start by finding the vector form for each force.
How would then find the TOTAL force?
 
  • #3
13
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By vector form do you mean to find the opposite of each angle's side length? As in the O for SOH CAH TOA?
 
  • #4
598
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By vector form do you mean to find the opposite of each angle's side length? As in the O for SOH CAH TOA?
I mean the components for each vector, in the y and x direction.
[tex] \vec{F} = F_x i + F_y j [/tex].
You will have to use trig.
 
  • #5
13
0
I mean the components for each vector, in the y and x direction.
[tex] \vec{F} = F_x i + F_y j [/tex].
You will have to use trig.
I'm sorry, but I'm still a little lost on what you mean. I know how to do trig but I don't really understand the terminology. By components would you mean to use sin30=x/150 in order to get the opposite length for the force in quadrant 1?
 

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