Unreasonable Results Suppose two children are using a

Chapter 3, Problem 39PE

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QUESTION:

Unreasonable Results Suppose two children are using a uniform seesaw that is 3.00 m long and has its center of mass over the pivot. The first child has a mass of 30.0 kg and sits 1.40 m from the pivot. (a) Calculate where the second 18.0 kg child must sit to balance the seesaw. (b) What is unreasonable about the result? (c) Which premise is unreasonable, or which premises are inconsistent?

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QUESTION:

Unreasonable Results Suppose two children are using a uniform seesaw that is 3.00 m long and has its center of mass over the pivot. The first child has a mass of 30.0 kg and sits 1.40 m from the pivot. (a) Calculate where the second 18.0 kg child must sit to balance the seesaw. (b) What is unreasonable about the result? (c) Which premise is unreasonable, or which premises are inconsistent?

ANSWER:

Solution 39PE Step-by-step solution Step 1 of 4 (a) Since that two children are using a uniform seesaw and it has center of mass over the pivot. Draw the free body of diagram as given below,

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