Supported 61914

A person lifts a stone weighing 285 kg with the help of a lever that is supported at a distance of 30 cm from the stone. A person acts on the lever at a distance of 90 cm from the support. How much force does a person have to use to lift a stone?

Correct answer:

F2 =  931.95 N

Step-by-step explanation:

m=285 kg g=9.81 m/s2  F1=m g=285 9.81=2055917=2795.85 N r1=30 cm m=30:100  m=0.3 m r2=90 cm m=90:100  m=0.9 m  M1=M2  F1 r1 = F2 r2  F2=F1 r2r1=2055917 109103=2018639 N=931.95 N



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