Gravitational 54411

How much force do we lift a stone in the water that weighs 30 kg and has a density of 2500 kg/m3? Gravitational acceleration g = 10 m/s².

Correct answer:

F =  180 N

Step-by-step explanation:

m=30 kg ρ=2500 kg/m3 ρ2=1000 kg/m3  g=10 m/s2  V=m/ρ=30/2500=2503=0.012 m3 m2=ρ2 V=1000 0.012=12 kg F1=m g=30 10=300 N F2=m2 g=12 10=120 N  F=F1F2=300120=180 N



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