Question

A dock worker pulls two boxes connected by a rope on a horizontal floor, as shown in the figure . All the ropes are horizontal, and there is some friction with the floor.Make a free-body diagram of the box B.

Answer 1

The diagram would be helpful!

Answer 2

On B there are four forces. Can you figure out what they are?

Answer 3

Actually five!

Answer 4

First, there's the weight of the box B, which has a direction down.

Then there is the normal force from the floor which has the direction up and is exactly equal in magnitude to the weight. If they weren't equal in magnitude, they wouldn't cancel each other out and the box would accelerate in the y direction, which it evidently does not.

Answer 5

Now, what are the other three?

Answer 6

this is what i have