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PRACA, MOC, ENERGIA MECHANICZNA<br />

6. 2,7 J<br />

a) <br />

b) <br />

c) <br />

<br />

2<br />

2m<br />

3m<br />

3<br />

1<br />

m<br />

Rys. 18.11<br />

7. m r<br />

A<br />

<br />

A<br />

m<br />

A<br />

D<br />

r<br />

D<br />

B<br />

B<br />

C<br />

Rys. 18.12<br />

C<br />

Oblicz iloraz:<br />

a) A, B, C i D<br />

b) A, B, C i D<br />

8. P i K<br />

o d = 12,56 m<br />

-<br />

m =0,2kg<br />

P<br />

d<br />

K<br />

Rys. 18.13<br />

168

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