mohon dijawab................

sumbu x
T1cos60=T2cos45
T1.1/2=T2.1/2akar 2
T1=T2 akar 2

sumbuy
T1 sin 60+T2sin45=W
T2 akar 2. 1/2+T2.1/2 akar 2=20
akar 2T2=20
T2=20/akar 2N
T1=T2.akar 2
=20/akar 2. akar 2
=20N