Question

Yg nomor 7.. tolong dijawab ya.. utk pr besok
sorry gambarnya vertical agak susah dibaca

Answer 1

1. s/h =w /f
300/75 = 400/ f
300f = 30000
f=100

2. lk/lb = w /f
150/30 = 200 /f
5f =200
f= 40

3. lk/lb = w /f
4f = 300
f = 75