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r = 0,4 cm
sudut kontak = 60 derajat
j = 0,5 n/m
g = 10 m/s kuadrat
ditanya...... h?
jawab= h= 2j.cos sudut kontak/p.g.r
2.0,5.cos60 derajat/1000.10.0,4
1\2\2.10
=o,25x10 pangkat -1 atau 0,025m <--
Jwbn terbaik ya :)