Physics Help

[jessicak]

Hey, there's this problem that I am completely stuck on. I have to calculate the necessary tension in Cable B.

Link to Diagram

thanks

 

[Heisenberg]

Break the tension into x and y components using the angle. The x and y forces each have to then add up to zero.

 

[StevenYoo]

methinks u need the horizontal component of the tension in Cable A.

horizontal component = 750N * cos30

is that the tension in Cable B?

 

[jessicak]

I thought it was 750*tan30

but i may be wrong

 

[StevenYoo]

Originally posted by: jessicak
I thought it was 750*tan30

but i may be wrong

def not tangent.

 

[Heisenberg]

Originally posted by: jessicak
I thought it was 750*tan30

but i may be wrong

That sounds right. The vertical component of cable A has to be 750N to balance the mass since it's exactly vertical. Then the horizontal component would be 750*tan 30. I think anyway.

 

[tikwanleap]

Originally posted by: Heisenberg

Originally posted by: jessicak
I thought it was 750*tan30

but i may be wrong

That sounds right. The vertical component of cable A has to be 750N to balance the mass since it's exactly vertical. Then the horizontal component would be 750*tan 30. I think anyway.

Yep Heisenberg is correct!

tan 30 = opposite / adjacent = horizontal component / vertical component = x / y

solve for the horizontal component:

x = y * tan 30

we know y = 750N to balance out the vertical weight.

so x = 750N * tan 30