It need not be less than one; it just happens to be so in most cases.
Kinetic friction is typically less than static friction because the surfaces are already in motion when kinetic friction is acting, so less force is needed to overcome the resistance between the surfaces. In contrast, static friction must be overcome to initiate motion, requiring a greater force.
The coefficient of static friction is higher than the coefficient of kinetic (or sliding) friction because it takes more force to overcome the initial static friction and start an object moving than to keep it moving once it is already in motion. Static friction is present when an object is at rest, while kinetic friction occurs when an object is moving.
Sliding friction is always less than the static friction by small amount.
True -It's "False"!
False. The force needed to overcome static friction is usually greater than the force needed to overcome kinetic friction.
because rolling friction is less than static friction.
Yes it is. The force of rollin friction is 100 to 1000 times weaker than static friction.
Yes. In physics, the types of friction include: static friction, sliding friction, rolling friction, and fluid friction. Water has fluid friction. This is considerably less than static friction, but it's there. Fluid friction also includes other liquids and air (things that flow).
Sliding friction is the force that opposes the motion of an object sliding along a surface. Rolling friction, on the other hand, is the force that opposes the motion of an object rolling over a surface. Rolling friction is generally less than sliding friction, making it easier for objects to move when rolling rather than sliding.
Static friction is generally greater than sliding friction. Static friction is the force between two surfaces that prevents their relative motion when they are not moving, while sliding friction is the resistance encountered when two surfaces are sliding against each other.
The coefficient of static friction is typically larger than the coefficient of kinetic friction because it represents the maximum force required to start an object in motion, overcoming the initial static friction. Once the object is in motion, the kinetic friction is usually less because the surfaces are already moving relative to each other, resulting in lower resistance.
Static friction is typically weaker than kinetic and rolling friction because it requires less force to overcome the initial resistance of an object at rest. Once an object is in motion, kinetic and rolling friction require less force to maintain movement compared to overcoming static friction.