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f = m.a
t1-w1sin45 = m1. a
tinjau benda 2
f= m.a
w2-t2 = m2. a
untuk keadaan setimbang
t1 = t2
w1 sin 45 + m1 a = w2-m2 a
w1 sin 44 - w2 = -m2 a - m1 a
m2 a + m1 a = w2-w1 sin 45
a ( m1 + m2 ) + w1 sin 45 = w2