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1 kg<br />
5 N<br />
0,1<br />
<br />
0,8 Ng =10m/s 2 <br />
α =30 ◦ <br />
m 1 =1kgυ = 3,3 m/s,<br />
m 2 =0,1kg<br />
-<br />
s =0,9m<br />
g =10m/s 2 <br />
x 100 m/s<br />
<br />
m =0,9kg<br />
<br />
mx<br />
100 m/s 1 3 m-<br />
5. m 1 =80kgl =2m<br />
m 2 =35kg<br />
<br />
<br />
-<br />
Δt =2s<br />
<br />
<br />
<br />
-<br />
<br />
R-<br />
<br />
12 kg<br />
20 ◦ <br />
30 N-<br />
0,30,2g =10m/s 2 <br />
<br />
-<br />
40 N<br />
141
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