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How much friction acts on the furniture when it is at rest on a horizontal surface?
Wiki User
∙ 13y ago
No friction at all.
There are two forces: the Downward force called WEIGHT and the Upward force called the NORMAL FORCE.
Since these two are in opposite directions and are, by definition, equal, they cancel out and there is no net force. Because there is no force, there is no acceleration, and in this case where there is no initial movement, the object stays at rest.
if there were a frictional force between the object and the surface, it would be in a direction with at least some horizontal component, but since there would be no other force to cancel this out, the object would be accelerating in some direction.
It is defined as "at rest", so there is no frictional force. If you were to push the furniture across the surface, then there WOULD be friction to resist the force you were applying.
EDIT: This answer is only partly correct.
The force of friction is zero if the furniture is at rest. However, if there is a force acting on the furniture that is less than the maximum static friction force (so the furniture still doesn't go anywhere), the force of friction equals the other force.
Wiki User
∙ 13y ago
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Why can't you roll a ball forever on a level surface?
because friction acts on the ball.
When is friction a useful force that acts between objects?
Most forms of conventional movement require friction. For example, a car could not go anywhere if not for the the friction between the rubber tire and the road surface.
Name the three types of friction?
Three types of friction are : 1. Kinetic friction :Friction that arises between surfaces in relative motion. 2. Static friction :Friction that acts between surfaces at rest with respect to each other 3. Rolling friction : Friction that occurs when an object rolls over a surface. Static, sliding, rolling.
Describe the 3 types of friction?
Three types of friction are :1. Kinetic friction :Friction that arises between surfaces in relative motion.2. Static friction :Friction that acts between surfaces at rest with respect to each other3. Rolling friction : Friction that occurs when an object rolls over a surface.3_types_of_friction
What are different types of friction?
Types of friction: 1. Kinetic friction arises between surfaces in relative motion, 2. Static friction acts between surfaces at rest with respect to each other, and 3. Rolling friction occurs when an object rolls over a surface.
What kind of friction is when friction acts on objects that are not moving?
static friction
If you push a crate at constant velocity how do you know how much friction acts on the crate compared to your pushing force?
When an object moves at a constant velocity, all forces acting on it must add up to zero. In the case of the crate on a horizontal surface, where the pushing force is directly horizontal (not down and horizontal), then the human push force must be equal and opposite to the friction force. In the case where the plane is inclined and/or where the human force isn't directly along the surface, we need to know the angles, component-ize all forces (human push force, normal force, friction, and weight), balance forces in the direction perpendicular to the plane (so it will not sink through the plane), and balance forces parallel to the plane (if it is to move at a constant velocity).
What is friction that acts on objects that are at rest?
Static friction.
Friction that acts on objects that are not moving?
Static Friction
Friction acts in the opposite direction of?
Friction always acts in the opposite direction, of the other object's motion.
How does friction change the way things move?
Friction is a resistive force, and always acts in a direction opposite the motion of the object. Surface friction is caused by the sliding movement of one surface over another. Air friction is caused by air molecules sliding passed an object. In both cases, it works by transferring kinetic energy from the moving object to the atoms/molecules of whatever is causing the friction.
What is the purpose of a wheel and axle?
The purpose of a wheel and axle is to reduce the total friction that acts against the linear motion of an object along a surface.
