# Homework Help: About tension (is this correct ?)

1. Jun 4, 2009

### live4physics

If I wanna know the tension on strings is possible use the algebra below ?

$$\Sigma$$Fx = cos$$\theta$$ T2-T3 = 0
and
$$\Sigma$$Fy = sen$$\theta$$T2-T1 = 0
so
T2=T3/cos$$\theta$$
and
T2 = T1/sen$$\theta$$
so
T1cos$$\theta$$ = T3sen$$\theta$$

is this correct ?

Thanks

obs: this is not my home work, but a self study.

2. Jun 4, 2009

### Staff: Mentor

Yes, looks good. (Use sinθ, not senθ.) You can go further by expressing T1 in terms of the mass m.

Nonetheless, this sort of textbook-style problem belongs in the "HW" forum, even if it's self study.