6)

a) =c)

[Graphics:../Images/index_gr_122.gif]
[Graphics:../Images/index_gr_123.gif]
[Graphics:../Images/index_gr_124.gif]

I corpi sono e restano in equilibrio.

b)

[Graphics:../Images/index_gr_125.gif]
[Graphics:../Images/index_gr_126.gif]
[Graphics:../Images/index_gr_127.gif]

[Graphics:../Images/index_gr_128.gif]

[Graphics:../Images/index_gr_129.gif]
[Graphics:../Images/index_gr_130.gif]
[Graphics:../Images/index_gr_131.gif]
[Graphics:../Images/index_gr_132.gif]
[Graphics:../Images/index_gr_133.gif]

d)

[Graphics:../Images/index_gr_134.gif]
[Graphics:../Images/index_gr_135.gif]
[Graphics:../Images/index_gr_136.gif]

[Graphics:../Images/index_gr_137.gif]

[Graphics:../Images/index_gr_138.gif]
[Graphics:../Images/index_gr_139.gif]
[Graphics:../Images/index_gr_140.gif]
[Graphics:../Images/index_gr_141.gif]


Converted by Mathematica      January 9, 2002