the force applied when using a simple machine is called the effort force
Answer:
The crate's coefficient of kinetic friction on the floor is 0.23.
Explanation:
Given that,
Mass of the crate, m = 300 kg
One worker pushes forward on the crate with a force of 390 N while the other pulls in the same direction with a force of 320 N using a rope connected to the crate.
The crate slides with a constant speed. It means that the net force acting on it is 0. Net force acting on it is given by :
So, the crate's coefficient of kinetic friction on the floor is 0.23.
You have a photo? I could help you if you show me a picture!
In my opinion i think it is a force because its showing frictional force consisting of two surfaces touching one another, in conclusion drag is a force