Respuesta :
Answer: Distance the box is moved.
Explanation:
Work is defined as force per distance moved by the force.
Work is done when there is relative change in position of an object exerted by the force.
Mathematically W = force × distance.
Amount of work done which needed against friction to slide a box in a straight line across a uniform, horizontal floor depends most on the smoothness of the surface.
What is friction?
Friction is the force which resist the motion of a body, when the the body is in contact with another body or surface.
The friction force of a body is the product of normal force acting on the body and the coefficient of the friction of that body.
There are many types of friction-
- a) Fluid-When a body is moving in a fluid, then the friction applied by the fluid substance over the body is called the fluid friction. The friction between the water substance and fish, when it swims through water is fluid friction.
- b) Rolling-When a body rotates over a surface, then the friction it feels is the rolling friction. Example of rolling friction is the friction between the road surface and the tires of a vehicle, which keep the vehicle in contact with road.
- c) Sliding-When a body slides over a surface, then the friction it feels is the rolling friction. A car sliding on ice is example of sliding friction.
- d) Static-This friction force acts on the body, when it resist on a surface. Example of static friction is the bottle kept on the desk table.
Here, to slide the box the friction which resist the box to move will be sliding.
To move this box, we need to apply some external force, which must be more than this friction force. Now, the friction move over the floor, it depends most on the smoothness of the surface.
Hence, the amount of work done which needed against friction to slide a box in a straight line across a uniform, horizontal floor depends most on the smoothness of the surface.
Learn more friction force here;
https://brainly.com/question/13680415
