Question

What is the coefficient of kinetic friction between the 100 N and 39 ⁰

Answer 1

Incomplete question.

With the given data, we can frame the question like this:

 A 100 kg box is at rest on a horizontal table. The force of 100 N is required to move the box at constant speed. Determine the coefficient of kinetic friction between the box and the table. 

Solution:

Given: mass (m)=100 kg

Force (F)=100 N and acceleration due to gravity (g)=10 $m/s^2$

Now we know that $F=u_{k} m g$

$100 =u_{k} \times 100 \times 10\\ \therefore u_{k}=\frac{100}{1000} \\ u_{k}=0.10$