Question

Select the correct answer.
If the coefficient of static friction is 0.35 and the normal force is 80 newtons, what is the maximum frictional force of the surface acting on the object?
A.
9.8 newtons
B.
28 newtons
C.
80 newtons
D.
23 newtons
E.
35 newtons

Answer 1

To find the maximum frictional force, we can use the formula:

\[ f_{max} = \mu_s \cdot N \]

where \( f_{max} \) is the maximum frictional force, \( \mu_s \) is the coefficient of static friction, and \( N \) is the normal force.

Given:
- \( \mu_s = 0.35 \)
- \( N = 80 \) newtons

Substituting the values:

\[ f_{max} = 0.35 \cdot 80 \]

Calculating this:

\[ f_{max} = 28 \text{ newtons} \]

So, the maximum frictional force of the surface acting on the object is **B. 28 newtons**.