An 80-Kg Man Balances the Boy on a Teeter-Totter as Shown

question 53

Multiple Choice

An 80-kg man balances the boy on a teeter-totter as shown. Note: Ignore the weight of the board.
-What, approximately, is the magnitude of the downward force exerted on the fulcrum?

• A)zero newtons
• B)100 N
• C)600 N
• D)800 N
• E)1000 N

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