Homework Help: Physics

Posted by Kyle on Monday, December 5, 2011 at 10:51am.

A 171-N child sits on a light swing and is pulled back and held with a horizontal force of 73.5N. The magnitude of the tension force of each of the two supporting ropes is?

Physics - drwls, Monday, December 5, 2011 at 11:27am
Let T be the single-rope tension and A be the angle from vertical

2T sinA = 73.5
2T cosA = Weight = 171

Square and add both equations

4T^2 = 73.5^2 + 171^2

Solve for T
Physics - nasser, Monday, December 5, 2011 at 12:39pm
186.13
Physics - hg, Monday, December 5, 2011 at 1:57pm
546545
Physics - rtrt, Monday, December 5, 2011 at 1:58pm
satshdf
Physics - Gloria, Friday, May 3, 2013 at 8:19pm
the answer is 94. I don't know how to do the problem though.

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