Question

Tolong bantu ya...please.
Kasih bintang lima deh..

Answer 1

KESETIMBANGAN
• tangga

t = tangga, o = orang

dinding licin, lantai kasar
cot θ = ¾
L = √(3² + 4²) = 5 m
wt = 40•10 = 400 N
wo = 600 N
x = 2 m
μs = __?

stj:
koefisien gesekan statis antara kaki tanggal dengan lantai
μs = [(½ wt + (x/L) wo) / (wt + wo)] cot θ
μs = [(½•400 + (2/5)•600) / (400+600)] • ¾
μs = [440/1000] • ¾
μs = 330/1000 = 0,33 ↑ jwb


Ok ?