Can coefficient of friction be greater than 1?

Can coefficient of friction be greater than 1?

The coefficient of friction depends on the objects that are causing friction. The value is usually between 0 and 1 but can be greater than 1. A value of 0 means there is no friction at all between the objects; such is possible with Superfluidity. A value of 1 means the frictional force is equal to the normal force.

What is the maximum coefficient of static friction?

The maximum static friction force is: (fs)max = μs N where μs is the coefficient of static friction. Static friction is subtle because the static friction force is variable and depends on the external forces acting on an object.

How can friction be both positive and negative?

1. I guess it depends how you look at it.
2. But, friction has both positive and negative benefits.
3. On the negative side, engines, axles, and other moving parts lose energy and have increased wear due to friction.
4. On the positive side, tires and brakes, and our ability to walk, are completely dependent on friction.

Is the force of friction negative?

As the force due to friction is moving in the OPPOSITE direction to the force Mary will exert, it should appropriately be labelled as negative.

Is friction force always negative?

yes, work done by friction is always either zero or negative. 2) since friction always opposes the motion of an object, the frictional force’s direction will always be opposite to the direction of the motion of the object.

Why the work done by the force of friction is always negative?

Friction, by its nature, always acts opposing the relative motion between two surfaces. work done by friction can be zero, when there is no relative motion. But positive work cannot be done under any circumstances, if you see it from a reference frame fixed to one of the two surfaces.

Is work done by spring force is always negative?

The minus sign indicates that the spring force is always opposite in direction to the displacement of its free end. So the work done by a spring force is always negative.

Is work done by spring force can be zero?

Total work done by spring force may be positive, negative or zero. though we know that the spring force is always directed towards mean position and the spring force is always negative.

Is spring force always positive?

No. It will not be always negative. If the particle connected to the spring is moving from extreme position towards mean position work done by spring force is possitive. If the particle is moving from mean position towards extreme position work done is negative.

How do you know if a spring force is positive or negative?

You pull a spring to extend it. The force you exert on the spring is in the same direction as your displacement. You have done positive work on the spring. The force that the spring exerts on you is in the opposite direction to its displacement so the spring has done negative work.

What does spring force affect?

simple harmonic oscillations …the force is called the spring force. If x is positive (displacement to the right), the resulting force is negative (to the left), and vice versa. In other words, the spring force always acts so as to restore mass back toward its equilibrium position.

How do you find the mass and frequency of a spring constant?

Kinematics of Spring-Block Oscillators — Determining the frequency from the mass of the block and the spring constant using f = 1/2π √ (k/m)