Engineering MechanicsLecture 1

4/10, Thursday11-12am

Interactions, (Newton’s 3rd law)

1

2

f21

f12

Sun : earth

Atom : atom

12 21= −f f

12 21+ =f f 0

3-Particles Interactions

1

2f21

f13

ij ji+ =f f 03

f12

f31

f23

f32

F3

F1

F2, 1, 2,3i j =

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