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-1/15 - 1/30 = 1/s'
-2/30 - 1/30 = 1/s'
-3/30=1/s'
s'= -30/3 = -10
M = l s'/s l
M =l -10/30 l
M = 1/3
75 mm
.....
M = I h'/h I
1/3 = h'/ 75
h' = 75/3
h = 25 mm
jawaban A
-1/15=1/30+1/s'
-2/30-1/30=1/s'
1/s'=-3/30
s'=-10 cm
M=s/s'
=-(30/-10)
=3
M=h/h'
3=75/h'
h'=25 mm (A)
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