Wednesday
April 23, 2014

Homework Help: Physics

Posted by John on Sunday, March 31, 2013 at 3:51pm.

A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.1 kg and the sign has a mass of ms = 16.4 kg. The length of the beam is L = 2.83 m. The sign is attached at the very end of the beam, but the horizontal wire holding up the beam is attached 2/3 of the way to the end of the beam. The angle the wire makes with the beam is = 31.2.
1)What is the tension in the wire?
2)What is the net force the hinge exerts on the beam?
3)The maximum tension the wire can have without breaking is T = 959 N.
What is the maximum mass sign that can be hung from the beam?
please help!!!!!

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