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WIL. What
w
block? In which dir
21. The friction coefficien
shown in figure (6-E7) is u. F1
that the man can exert on the
does not slip on the floor.
which direction should this TUI CU
coefficient between the board and the floo.
ure (6-E7) is u. Find the maximum fore
an exert on the rope so that the boară
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