Question

tolong Bantu besok dikumpulkan!!​

Answer 1

Jawaban:

1.

Fa = W - Wair = 500 - 400 = 100N

2.

γ = 7x10^-7 N/m

θ = 37

ρ = 1000 kg/m3

r = 2 mm = 0,002 m

h = ?

h = 2γ cos θ / rρg

h = 2*7x10^-7 * 0,8 / 0,002*1000*10

h = 11,2x10^-7 / 20

h = 0,56x10^-7 m

3.

r = 200 mm = 0,2m

η = 1,5 Pa s

v = 0,2 m/s

Fs = 6 π ηrv

Fs = 6*3,14*1,5*0,2*0,2 = 1,13 N

4.

r = 7mm = 0,007m

η = 2 Pa s

v = 0,5 m/s

Fs = 6 π ηrv = 6*3,14*2*0,007*0,5 = 0,13 N

Penjelasan: