PHYS 120 Lecture Notes - Lecture 17: Net Force
14 Dec 2017
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A gymnast with mass m1 = 42 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 110 kg and length l = 5m. Each support is 1/3 of the way from each end. Initially the gymnast stands at the left end of the beam. Now the gymnast (not holding any additional mass) walks directly above the right support. At what location does the gymnast need to stand to maximize the force on the right support: rotational statics i page 1. A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6. 2 kg and the sign has a mass of ms = 17 kg. The a(cid:374)gle the wire (cid:373)akes with the bea(cid:373) is = The maximum tension the wire can have without breaking is t = 848n.
