Estudiant

80 Nw
80 Nw
70 Nw
70 Nw
70 Nw
70 Nw
120 Nw
120 Nw
100 Nw
100 Nw
125 Nw
125 Nw
20 Nw
20 Nw
30 Nw
30 Nw
40 Nw
40Nw
15°
15°
25°
25°
75°
75°
10°
10°
15°
15°



∑ Fx
F1x= 20 Nw*cos 0°= 20 * 1 = 20 Nw
F2x= 30 Nw * sen 75°= 30 * 9.6 = 28.97 Nw
F3x= 40 Nw * cos 90 ° = 40 *0 = 0
F4x= 80 Nw * sen 15° = 80 * .25 = - 20 .70 Nw
F5x = 70 Nw * sen80° = 70 * 9.8 = - 68.93 Nw
F6x= 70 Nw * cos 0° = 70 * 1 = -70 Nw
F7x= 120 Nw *sen 75 ° = 120 *9.6 = -115.91 Nw
F8x =100 Nw * cos 90 ° = 100 * 0 = 0
F9x= 125 Nw * sen 65° = 125 * .90 = 113.28 Nw
∑ FX = -113.29 Nw
∑ Fy
F1y = 20 Nw *sen 0° = 20 * 0 = 0
F2y = 30 Nw * cos 75° = 30 * .25 ° = 7.76 Nw
F3y = 40 Nw * sen 90 ° = 40 * 1= 40 Nw
F4y = 80 Nw * cos15° = 80 * .96 = 77.27 Nw
F5y = 70 Nw *cos 80°= 70 * .17 = 12.15 Nw
F6y = 70 Nw * sen 0 ° = 70 * 0 = 0
F7y = 120 Nw * cos750° = 120 * .25 = - 51.05 Nw
F8y = 100 Nw * sen 90 ° = 100 * 1 = -100 Nw
F9y = 125 Nw * cos 65° = 125 * .42 = -52.82 Nw∑Fy = -46.69 Nw

Tan ɸ = ∑ Fy / ∑ Fx
Tan ɸ = -46.69 / -113.29
Tan ɸ = .4121
∑ Fx = -113.29 Nw
∑ Fx = -113.29Nw
ɸ = tan -1 .4121
ɸ = 22.39 °

R= ∑FX2 + 2 ∑ Fy 2
∑ Fy = -46.69 Nw
∑ Fy = -46.69 Nw
R= 131.127