Question

will someone please explain fairly thoroughly how to correctly solve number one? I seem to keep getting the same answer no matter what i do

1. The 1500 kg steel beam is supported by two ropes as shown below. tension in each cable? -30°.0, -25°. What is the Ticos - (T, sind, cosa = mg yo *T, (0.866) +/T, (0.5)) (0.9063) = 14700 (0.4226) A - T, (0.866) +J, (0.57(0.9063) =6212.45 O T, (0.866 +0.5) = 6854.72 Etx= - Ti sino + Tusind = não T2 = T, Sind Sina T= 5018 T₂ = 5936 zr - T, cos O + Y, cosch -mg = la I cos , + Tz cosa mg 2. Rachel, whose mass is 65 kg, stands on a bathroom scale in an elevator. The scale reads 530 N for the first 3.0 s after the elevator starts moving then 637 N for the next 3.0 s. What is the elevator's velocity 6.0 S after starting? Fruet = m å > Fret = 637N-530=ma. - Fret = 107 = 65 a a = 1.646 - y = art sv = 1.646/3) v = 4,938 m/s

Answer 1

considering forces along horizontal

T1 sin x1 = T2 sin x2

T1 = T2 sin 25 / sin 30

T1 = 0.8452 T2. ... (i)

considering forces along vertical

T1 cos 30 + T2 cos 25 = mg

0.8452 T2 + cos 25 T2 = 1500* 9.8

T2 = 8392.77 N

T1 = 7093.57 N

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