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Báo cáo thí nghiệm vật lý bài 5 nhóm mình tổng hợp
Typology: Lab Reports
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BÁO CÁO 5: XÁC ĐỊNH HỆ SỐ NHỚT CỦA CHẤT LỎNG THEO PHƯƠNG PHÁP STOKES I. CƠ SỞ LÝ THUYẾT
Fms = η ⅆ v ⅆ z
P = mg = 4 π r 3 ρ 1 g
Fms = 4 π r 3 ρg
FC = 6 πηrv BÁO CÁO THÍ NGHIỆM VẬT LÝ
mdt ⅆ ⃗ v = ⃗ P +⃗ Fms + ⃗ Fc
η =
2 g v 0
τ
η =
2 g L
η =
2 g L ( 1 +2, d D )
2. PHƯƠNG PHÁP ĐO:
o
δρ = ∆ ρ 1 ρ 1
∆ π π
∆ m m
∆ d d
δ ❑=
η
∆ ρ 1 + ∆ ρ ρ 1 − ρ
∆ g g
∆ τ τ
( 2 D +2,4 d ) ∆ d d +2,4 d
4. BẢNG SỐ LIỆU:
3
o
o
=6,308 ( mm ).
=0,010 ( mm )
τ = τ 1 + τ 2 + τ 3 + τ 4 + τ 5 5
=0,697 ( s ).
=0,001( s ).
− 3 1 6
− 3 ) 3 =8069,61( kg / m 3 )
∆ π π
∆ m m
∆ d d ¿
2
. g. τ
d
− 3
2 ⋅ 9,81.0, 284 ⋅ 10 − 3
¿ 0,266( kg / m. s )
η
∆ ρ 1 + ∆ ρ ρ 1 − ρ
∆ g g
∆ τ τ
( 2 D +2,4 d ) ∆ d d +2,4 d