- #1
cowgiljl
- 63
- 1
A traffic light weigh 235 Nt. It is supported by 2 wires cal the tension of each of the wires
T1 has an angle of 21 degrees
T2 has an angle of 38 degrees
There is no sag in the light
I have 2 equations
equ 1) Fx = T2 cos 38 - T1 cos 21 = 0
equ 2) Fy = T1 sin 21 + T2 sin 38 = 0
I set T2 = to T1
T2 = T1 (cos 21 / cos 38) = 1.2 T1
then subsitutedthat into equatin 2
T1 sin 21 + (1.2 T1)(sin 38) - 235 Nt = 0
T1 = 214 N
T2 = 1.2T1= 1.2(214)
T2 = 257 N
I think iI went about this in the right way i think
thanks
T1 has an angle of 21 degrees
T2 has an angle of 38 degrees
There is no sag in the light
I have 2 equations
equ 1) Fx = T2 cos 38 - T1 cos 21 = 0
equ 2) Fy = T1 sin 21 + T2 sin 38 = 0
I set T2 = to T1
T2 = T1 (cos 21 / cos 38) = 1.2 T1
then subsitutedthat into equatin 2
T1 sin 21 + (1.2 T1)(sin 38) - 235 Nt = 0
T1 = 214 N
T2 = 1.2T1= 1.2(214)
T2 = 257 N
I think iI went about this in the right way i think
thanks