Jawabanmu

2014-02-14T19:16:24+07:00
H=75m
EP=6000J
g=10ms^-2

EP = mgh
6000 = m.10.75
6000 = 750m
m = 6000/750
m = 600/75
m = 8 kg
2014-02-14T19:18:06+07:00
Ep = m.g.h
6000 J = m . 10 m/s² . 75 m
 \frac{6000 J}{10 m/s² . 75 m} = m
8 kg = m