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h = 2
m = 200g = 0,2
g = 10
a. Ep = mgh = 0,2.10.2 = 4 J
Ek = 0
b. Ep = mgh --> h= 1
= 0,2.10.1 = 2 J
Ek = EM- Ep
= 4 - 2
= 2 J
c. saat mencapai tanah h = 0
Ep = 0
Ek = Ep saat h = 2
= 4 J
d. Em saat h = 2m, 1m, dan ditanah yaitu tetap
Em = Ep+Ek
= 4 J