Beats me.newbphysic said:
1. Homework Statement
W engine = 500 kg * 9.81 = 4905 N
sin t = 3/5
Homework Equations
The Attempt at a Solution
1. use section AE
ΣMa = 0
[itex] 3/5 * Fcd *2 - 4905 * 3 = 0 [/itex]
[itex] F = 12262.5 N [/itex]
2. use section EB
ΣMe = 0
[itex] 3/5 * Fcd *1 - 4905 * 2 = 0 [/itex]
[itex] F = 16350 N [/itex]
why 1 and 2 doesn't result same answer ?
SteamKing said:
There are two equations of static equilibrium: ∑F = 0 and ∑M = 0.newbphysic said:There is only 3 equations right ?
ΣMoment =0
[itex] Fy * distance - weight * distance = 0 [/itex]
Σshear = 0
Σnormal = 0
ok, so moment is caused by force in the vertical direction so formula for ΣM = Fy * d - W * dSteamKing said:
newbphysic said:
Your calculation for F is correct. However, you need to calculate the components of F in order to find the internal forces acting at point E.newbphysic said:
If i cut to segment EB
sin t will be the same since angle t is not change
ΣM = 0is my formula correct ?
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