00:01
This question we have to find the equation of the elastic curve of this diagram.
00:09
So we have to use e i.
00:13
D square v by the x squared equal m.
00:18
To find this and m in this equation is minus 180 x plus 277 .5 times x minus 12.
00:30
Minus 20 x minus 24.
00:35
And if we integrate this, you have eid, dv by the x is minus 90 x squared plus 138 .75 times x minus 12 square, minus 12 square, minus 35 x minus 24 square plus c1.
00:55
And we integrate it again.
00:58
We have that eiv is minus 12 square, 30x to the power of 3 plus 46 .25 x minus 12 to the power of 3 minus 11 .6 times x minus 24 to the power of 3 plus c1 x plus c2.
01:18
Give this equation equation 1 and add the bc battery condition you have that at x equal 12 inches, the v is equal to 0.
01:38
And from this, you'll have that 12c1 plus c2 is equal to 5184 0...