A 300-Kg Child Sits on One End of a Long Uniform

question 18

Multiple Choice

A 30.0-kg child sits on one end of a long uniform beam having a mass of 20.0 kg,and a 40.0-kg child sits on the other end.The beam balances when a fulcrum is placed below the beam a distance 1.10 m from the 30.0-kg child.How long is the beam?

• A) 2.12 m
• B) 1.98 m
• C) 1.93 m
• D) 2.07 m
• E) 2.20 m

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