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m=1500g=1,5kg
h=120cm=1,2m
W=E=m*g*h
W=1,5kg*10m/s²*1,2m
W=15*1,2
W=18J
m=1,5kg
h=1,2m
W=m×g×h
W=1,5kg×10m×1,2m
W=18J