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Kat, Matt, and Nat are arguing about why a physics book on
Chapter 6, Problem 3CQ(choose chapter or problem)
Problem 3CQ
Kat, Matt, and Nat are arguing about why a physics book on a table doesn’t fall. According to Kat, “Gravity pulls down on it, but the table is in the way so it can’t fall.” “Nonsense,” says Matt. “There are all kinds of forces acting on the book, but the upward forces overcome the downward forces to prevent it from falling.” “But what about Newton’s first law?” counters Nat. “It’s not moving, so there can’t be any forces acting on it.” None of the statements is exactly correct. Who comes closest, and how would you change his or her statement to make it correct?
Questions & Answers
QUESTION:
Problem 3CQ
Kat, Matt, and Nat are arguing about why a physics book on a table doesn’t fall. According to Kat, “Gravity pulls down on it, but the table is in the way so it can’t fall.” “Nonsense,” says Matt. “There are all kinds of forces acting on the book, but the upward forces overcome the downward forces to prevent it from falling.” “But what about Newton’s first law?” counters Nat. “It’s not moving, so there can’t be any forces acting on it.” None of the statements is exactly correct. Who comes closest, and how would you change his or her statement to make it correct?
ANSWER:
Step 1 of 3
The objective here is to evaluate the free body diagram of a book placed on a table and give a proper explanation for why it is not falling from the table.