Question

Two large books are stacked on top of each other on a table(Figure 3). The mass of each book is 6. 5 kg. Given that the coefficient of static friction between the bottom book and the table is 0. 15, what is the lowest the coefficient of static friction between the books can be in order to apply force and move both books?

Answer 1

Answer: 19.11

Explanation:

Since there are 2 books, multiply 6.5kg by 2.

6.5 x 2 = 13kg

Then, turn kg into Newtons.

F=MG

13x9.8=127.4 N

Then, you multiply that by μ
F=Nμ
127.4x0.15=19.11