A bookshelf is at rest in a room. A force of 35.0 newtons is applied to a bookshelf. If the floor imparts a frictional force of 2.90 newtons, what is the net force acting on the bookshelf?
37.9 newtons
32.1 newtons
33.1 newtons
35.0 newtons
50.5 newtons
It has to be 37.9 or 32.1
The others are wrong I think.
The net horizontal force is 35 -2.9 = 32.1 N
i have no clue
To find the net force acting on the bookshelf, we need to add up the forces acting on it. In this case, we have a force of 35.0 newtons applied to the bookshelf, and a frictional force of 2.90 newtons exerted by the floor.
The net force is obtained by subtracting the frictional force from the applied force. So, the net force acting on the bookshelf is:
35.0 N - 2.90 N = 32.1 N
Therefore, the correct answer is 32.1 newtons.