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m mi

mi=m1−2c2

|a|Θ=m1−λ

4Θ

Θ

λ

9.8m/s2

λ

Θ

Θ

F=−P QL

c1

ws

−1

wb

wswb

ws= 0)

∂(mv)

∂t = 0 = m∂v

∂t +v∂m

∂t

F=−c∂m

∂t

F=−c∂m

∂x

∂x

∂t =−c2∂m

∂x

a∼v2/L

F=−c2mbigend −msmallend

L

F=−mc2

Lλ

4ws

−λ

4wb

ws= 0

ws

¯ws=0 + L+ 4ws

6

¯

wb=0 + L+ 4wb

6

F=−3mc2λ

2L1

L+ 4ws

−1

L+ 4wb

λ

λ=

8c2/a = 8c2/(2c/(L/c)) = 4L

F=−6mc21

L+ 4ws

−1

L+ 4wb

E=mc2E=´P dt

F=−6ˆP dt 1

L+ 4ws

−1

L+ 4wb

F=−6P L

c1

L+ 4ws

−1

L+ 4wb

F=−6P QL

c1

L+ 4ws

−1

L+ 4wb

wbig/wsmall F1dF3dFObs

mN mN mN

11 ×106

wswb