Posted by kate on Tuesday, October 26, 2010 at 5:42pm.
A 3.0 m long rigid beam with a mass of 100 kg is supported at each end. An 60 kg student stands 2.0 m from support 1. How much upward force does each support exert on the beam?
support 1
support 2

physics  MathMate, Tuesday, October 26, 2010 at 7:11pm
.......100..60......
..........v......v.......

^.......................^
R1.................R2
Take moments about R1,
R2*3=100*1.5+60*2.0
Take moments about R2
R1*3=100*1.5+60*1.0
Solve for R1 and R2. They should add up to 100+60.

physics  Deez Nutz, Monday, December 14, 2015 at 4:52pm
Deez........................................................................................................................................................................................................................................................................................................................................................Nutz
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