Question

Jill is pulling a 200. Newton sled through the snow at constant velocity using a horizontal force of 10. Newtons. What is the kinetic coefficient of friction of the sled on the snow?

Answer 1

The kinetic coefficient of friction of the sled on the snow is 0.05

Step-by-step explanation:

The given parameters are;

The weight of the sled Jill is pulling, W = 200 N

The force with which Jill is pulling the the sled = 10 Newtons

The nature of the speed with which the sled is pulled = Constant speed

Therefore, given that the only opposing force to the pulling of the sled = The force of kinetic friction, we have;

The force with which Jill is pulling the the sled = 10 Newtons = The force of kinetic friction,
`F_k`

The force of kinetic friction = The weight of the sled, W × The kinetic coefficient of friction of the sled on the snow,
`\mu _k`

`F_k` = W ×
`\mu _k`

`\mu _k` =
`F_k`/W = 10 N/(200 N) = 0.05

The kinetic coefficient of friction of the sled on the snow =
`\mu _k` = 0.05.