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ep = m.g.h
200=m.10.2
200=m.20
m = 200
20
m = 10 kg
h : 2 m
Ep : 200 j
Dit : m ?
penyelesaian :
Ep = m.g.h
200 = m.10.2
200 = 20m
m = 200/20
m= 10