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h = 50 m
dgn ketetapan grafitasi (g) = 10
ditanya = EP
jawab:
EP= m.g.h
= 25. 50. 10
= 12.500
m= 25 kg
g= 10 m/s2
h= 50 m
Ep = m.g.h
=25.10.50
=12500 joule