Question

A 0.50 kg book is pushed across a table from rest. If the book does not move until more than 3.25 N of force is applied, what is the coefficient of static friction?

Answer 1

0.66

Step-by-step explanation:

Given:

• fs = 3.25 N
• m = 0.50 kg
• g = 9.8 m/s²

`\boxed{f_s=\mu N}`

for horizontal surface:
`\boxed{N=mg}`

Therefore:

`\boxed{f_s=\mu mg}`

`3.25=\mu(0.50*9.8)`

`\mu=3.25/4.9`

`=0.66`