Little help with practice problem for exam

tibu

Hello, I'm new here. Basically I have this practice excercise for my exam.:

A steel ball of mass 4.30 kg is suspended from two strings as shown in the picture. The upper string is at an angle of theta = 27.0° from the vertical, while the lower string is horizontal. Calculate the magnitude of T2, the tension in the lower string.

http://capa.hep.uprm.edu/msuphysicsl...h183f6pic2.gif

My general problem is that I'm bad with separating forces into components, and I assume this excercise deals with that. Can someone plz point me in the right direction to solving this problem? Any help will be greatly appreciated.

daveed

okay well, the vertical component of the top string would be equal to weight... baseically 4.3 kg*g(acceleration of gravity). that would be tension*sin27... find out tension, the horizontal components of the two strings cancel out... and the horizontal component of the top string would be tension*cos27

ah, by the way, there is a homework help section on the forum, scroll down to the lower section of the webpage and you should see it

Tide

Since gravity is vertical and the string on the right is horizontal you already know the horizontal and vertical components of the other string! :-)

tibu

hmm apparently I'm doing something wrong because I dont get the correct answer.

In order to get the tension in the lower string i have to find out the horizontal component of the top string correct?

*Edit*
I'm posting this in the homework help section. Sorry for not noticing this.

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Tide Recognitions: Homework Help Science Advisor	Since gravity is vertical and the string on the right is horizontal you already know the horizontal and vertical components of the other string! :-)

tibu	Little help with practice problem for exam hmm apparently I'm doing something wrong because I dont get the correct answer. In order to get the tension in the lower string i have to find out the horizontal component of the top string correct? Edit I'm posting this in the homework help section. Sorry for not noticing this.