What is Static Friction ?

What is Static Friction ?
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1 Answer

Answer :

The friction that occurs between two surfaces when one is not moving relative to the other is called positional friction.
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Related questions

The function of ball bearings in a wheel is – (1) to increase friction (2) to convert kinetic friction into rolling friction (3) to convert static friction into kinetic friction (4) just for convenience

Description : The function of ball bearings in a wheel is – (1) to increase friction (2) to convert kinetic friction into rolling friction (3) to convert static friction into kinetic friction (4) just for convenience

Last Answer : (2) to convert kinetic friction into rolling friction Explanation: A ball bearing is a type of rollingelement bearing that uses balls to maintain the separation between the bearing races. The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads.

Kinetic friction is always A. lesser than static friction B. greater than static friction C. equal to static friction D. equal to contact force

Description : Kinetic friction is always A. lesser than static friction B. greater than static friction C. equal to static friction D. equal to contact force

Last Answer : lesser than static friction

The function of ball bearings in a wheel is : (1) to increase friction (2) to convert kinetic friction into rolling friction (3) to convert static friction into kinetic friction (4) just for convenience

Description : The function of ball bearings in a wheel is : (1) to increase friction (2) to convert kinetic friction into rolling friction (3) to convert static friction into kinetic friction (4) just for convenience

Last Answer : to convert kinetic friction into rolling friction

A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a.Proportional to the coefficient of static friction b.Proportional to the coefficient of dynamic friction c.Indeterminate d.Determinate but depends on the acceleration of the cylinder e.None of the above

Description : A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a. ... c.Indeterminate d.Determinate but depends on the acceleration of the cylinder e.None of the above

Last Answer : c. Indeterminate

Which one of the following is not the law of dry friction? a.If friction is neglected, the reactions are always normal to the surfaces on contact b.Friction always acts to oppose the relative motion of the free body c.If static friction is acting, the value of the friction force may vary from zero to its maximum value d.The force of friction is always normal to the surface e.All of the above

Description : Which one of the following is not the law of dry friction? a.If friction is neglected, the reactions are always normal to the surfaces on contact b.Friction always acts to oppose the relative motion of ... its maximum value d.The force of friction is always normal to the surface e.All of the above

Last Answer : d. The force of friction is always normal to the surface

A 5 m ladder of mass 25 kg is placed in a position where its inclination to a vertical wall is at 30?. A 100 kg man is to climb the ladder. If the coefficient of static friction is 0.25 the height along ladder at which the slipping will be induced would be a.2.4 m b.1.6 m c.0.8 m d.1.2 m e.0.5 m

Description : A 5 m ladder of mass 25 kg is placed in a position where its inclination to a vertical wall is at 30?. A 100 kg man is to climb the ladder. If the coefficient of static friction is 0.25 the height along ladder at which the slipping will be induced would be a.2.4 m b.1.6 m c.0.8 m d.1.2 m e.0.5 m

Last Answer : c. 0.8 m

A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a.Indeterminate b.Proportional to the coefficient of dynamic friction c.Determinate but depends on the acceleration of the cylinder d.107 dynes e.Proportional to the coefficient of static friction

Description : A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a. ... on the acceleration of the cylinder d.107 dynes e.Proportional to the coefficient of static friction

Last Answer : c. Determinate but depends on the acceleration of the cylinder

Static friction is always a.greater than the dynamic driction b.either greater or more than the dynamic friction c.less than the dynamic friction d.107 dynes e.equal to the dynamic friction

Description : Static friction is always a.greater than the dynamic driction b.either greater or more than the dynamic friction c.less than the dynamic friction d.107 dynes e.equal to the dynamic friction

Last Answer : a. greater than the dynamic driction

The coefficient of static friction will have the highest value in case of a.Mild steel and mild steel b.Mild steel and copper c.Cast iron and steel d.Rope and wood e.Any of the above loctions

Description : The coefficient of static friction will have the highest value in case of a.Mild steel and mild steel b.Mild steel and copper c.Cast iron and steel d.Rope and wood e.Any of the above loctions

Last Answer : d. Rope and wood

What is Static Friction ?

Last Answer : In this friction two objects are subject to each other

A block of mass 37 kg rests on a rough horizontal plane having coefficient of static friction 0.3.

Description : A block of mass 37 kg rests on a rough horizontal plane having coefficient of static friction 0.3.

Last Answer : A block of mass 37 kg rests on a rough horizontal plane having coefficient of static friction ... force required to just move the block horizontally.

Calculate the coefficient of static friction for an object of mass 50 kg placed on horizontal table

Description : Calculate the coefficient of static friction for an object of mass 50 kg placed on horizontal table

Last Answer : Calculate the coefficient of static friction for an object of mass 50 kg placed on horizontal ... object just moves when spring balance shows 50N.

What is friction? Define coefficient of static friction and coefficient of kinetic friction.

Description : What is friction? Define coefficient of static friction and coefficient of kinetic friction.

Last Answer : What is friction? Define coefficient of static friction and coefficient of kinetic friction. Give the necessary formula for each.

State the laws of static friction.

Description : State the laws of static friction.

Last Answer : State the laws of static friction.

Why force of static friction is known as ‘self-adjusting force?

Description : Why force of static friction is known as ‘self-adjusting force?

Last Answer : Why force of static friction is known as ‘self-adjusting force?

What is kinetic friction and static friction?

Description : What is kinetic friction and static friction?

Last Answer : Friction is the resistance to movement of an object pressing/resting/moving on a surface. It's not intuitively obvious but the standing still friction and moving friction are different. Assume you have a ... than the force required to keep it moving (kinetic friction) after it has begun to move.

Friction can be reduced by changing over from _____. A. Sliding to rolling B. Dynamic to static C. Potential energy to kinetic energy D. Rolling to sliding

Description : Friction can be reduced by changing over from _____. A. Sliding to rolling B. Dynamic to static C. Potential energy to kinetic energy D. Rolling to sliding

Last Answer : ANSWER: A

Liquid delivery by centrifugal pump starts, only when the head developed by it is equal to the __________ head. (A) Manometric (B) Total (C) Static (D) Friction

Description : Liquid delivery by centrifugal pump starts, only when the head developed by it is equal to the __________ head. (A) Manometric (B) Total (C) Static (D) Friction

Last Answer : (A) Manometric

A piezometer provided in the pipe measures (A) Friction factor (B) Static pressure (C) Dynamic pressure (D) None of these

Description : A piezometer provided in the pipe measures (A) Friction factor (B) Static pressure (C) Dynamic pressure (D) None of these

Last Answer : (B) Static pressure

Dynamic friction as compared to static friction is (A) Same (B) More (C) Less (D) May be less of more depending on nature of surfaces and velocity

Description : Dynamic friction as compared to static friction is  (A) Same  (B) More  (C) Less  (D) May be less of more depending on nature of surfaces and velocity 

Last Answer : (C) Less 

State four laws of static friction.

Description : State four laws of static friction. 

Last Answer : 1. The frictional force is always acts tangential to the plane of contact and in the opposite direction of motion. 2. When the body is in limiting equilibrium, the ratio of limiting friction to ... is a self-adjusting force and it increases as the applied force increases up to limiting friction. 

Dynamic friction as compared to static friction is?

Description : Dynamic friction as compared to static friction is?

Last Answer : Dynamic  friction  is   less  compared  to  static  friction.

Does anyone know the coefficient of friction for an A rated tire?

Description : Does anyone know the coefficient of friction for an A rated tire?

Last Answer : answer:I can't give you an exact number on that, but I the A traction grade is the second-highest rating given to a tire, AA being the highest. The traction grade applies to wet ... 'd see on a skidpad test. There, you have sidewall construction and vehicle characteristics to consider as well.

Explain the disadvantages of friction ?

Description : Explain the disadvantages of friction ?

Last Answer : Vehicles cannot move easily due to excessive friction. As a result of friction between the moving parts of the machinery, they are eroded and torn. Any type of vehicle has to spend extra fuel ... converted into heat. This causes the engine parts to overheat which can cause the engine to malfunction.

How to reduce friction ?

Description : How to reduce friction ?

Last Answer : The main cause of friction is uneven surface. The high notch of any one of them gets stuck in the arteries and causes friction. Therefore the surface is smoothed as much as possible to reduce friction ... are also used to keep uneven surfaces out of contact with each other for long periods of time.

Explain the effect of friction on motion ?

Description : Explain the effect of friction on motion ?

Last Answer : Friction is a kind of barrier force that slows down the motion of an object. Although friction causes many problems in our daily life, friction plays an important role in movement and driving. Road and ... car to move forward. The brakes used to control the speed work on the principle of friction.

Explain why friction occurs while driving .

Description : Explain why friction occurs while driving .

Last Answer : Apparently, the surface of an object seems to be smooth, but when viewed with the help of a microscope, many high and low grooves can be noticed on it. When an object moves over another object , ... As a result, the motion of one floor over another is restricted. This is how friction is created.

What is flowing friction ?

Description : What is flowing friction ?

Last Answer : When an object is moving in a flowing substance, the action of friction is called flowing friction.

Argument in favor of friction is a necessary nuisance ?

Description : Argument in favor of friction is a necessary nuisance ?

Last Answer : There is nothing we can do without friction. If there were no friction, the motion of the object would not have stopped , it would have continued non-stop. A nail is fixed to the wall because ... parachute. So while friction is considered a nuisance in many areas of our daily lives, it is essential.

What is friction ? Write the names of different types of friction ?

Description : What is friction ? Write the names of different types of friction ?

Last Answer : When two objects try to move on top of each other or keep moving, the obstruction that arises against this motion at the touch of both objects is called friction. Four types of friction. Namely- 1. Position friction , II. Slippery friction , 3. Rotating friction , 4. Flowing friction.

Explain the difference between vortex friction and vortex friction ?

Description : Explain the difference between vortex friction and vortex friction ?

Last Answer : The friction that occurs when an object tries to slip or rub on the surface of another object, that is, when it moves, and the friction that acts against the motion when an object rolls ... to cyclic friction. Undoubtedly, the value of rotational friction is much lower than that of bismuth friction.

What are the benefits of friction ?

Description : What are the benefits of friction ?

Last Answer : Advantages of friction: (a) I could not walk without friction. (B) Nail or screw flour would not be possible. (C) No giro could be given on the rope.

Friction is a necessary nuisance - argue in favor ?

Description : Friction is a necessary nuisance - argue in favor ?

Last Answer : Friction is a necessary nuisance. Apparently there is no need for friction. But without friction, an object would continue to move in the same unobstructed way. If there was no friction again, ... there was no friction, we would have faced various difficulties. So friction is a necessary nuisance.

Why friction force is not a conservation force ?

Description : Why friction force is not a conservation force ?

Last Answer : If an object starts its journey from a point and turns in a certain direction and then returns to the same point. This is possible in the case of gravitational forces and electric balls. This ... force of friction is not zero. Rather negative. For this reason friction force is not forest protection.

What is friction and friction force ?

Description : What is friction and friction force ?

Last Answer : Friction and friction force: When an object tries to move or move from one object to another in contact, an obstacle arises against the motion of the two objects , this obstacle is called ... . The force of friction always acts in the opposite direction of motion. Friction always hinders motion.

What is bisarpa friction ?

Description : What is bisarpa friction ?

Last Answer : : The friction that occurs when an object tries to slip or rub on the surface of another object is called slippery friction.

What is friction called ?

Description : What is friction called ?

Last Answer : Friction is called Necessary evil .

What is used to reduce the friction of rotating parts of a car ?

Description : What is used to reduce the friction of rotating parts of a car ?

Last Answer : : Lubricants are used to reduce the friction of the rotating parts of the car.

What is friction ?

Description : What is friction ?

Last Answer : When an object tries to move or move from one object to another in contact with another, an obstacle is created against the motion of the two objects , this obstacle is called friction.

What is slippery friction ?

Description : What is slippery friction ?

Last Answer : The friction that occurs when an object tries to slip or rub on the surface of another object is called slippery friction.

What is rotation friction ?

Description : What is rotation friction ?

Last Answer : When an object rolls over another surface, the force of friction that acts against the motion is called rotational friction force. The speed of the wheel of the bicycle, the speed of the marble is an example of rotating friction.

What is flowing friction ?

Description : What is flowing friction ?

Last Answer : Friction that acts when an object is moving between any flowing substance such as liquid or gaseous matter is called flowing friction. The parachute exploits the friction of the current.

The water from a hand pump is warm in winter because - (1) our body is cold in winter and the water appears to be warm (2) the temperature inside the Earth is higher than the atmospheric temperature (3) the pumping process causes friction which warms up the water (4) inside water comes out and absorbs heat from the environment

Description : The water from a hand pump is warm in winter because - (1) our body is cold in winter and the water appears to be warm (2) the temperature inside the Earth is higher than the atmospheric ... causes friction which warms up the water (4) inside water comes out and absorbs heat from the environment

Last Answer : (2) the temperature inside the Earth is higher than the atmospheric temperature

The water from a hand pump is warm in winter because – (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric temperature (3) The pumping process causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Description : The water from a hand pump is warm in winter because - (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric ... causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Last Answer : (2) The temperature inside the earth is higher than the atmospheric temperature Explanation: In winter, the outside temperature is lower than that of water flowing out of the pump, and therefore, the ... the outside temperature is higher than the water of the pump, and therefore, it feels cold.

The water from a hand pump is warm in winter because – (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric temperature (3) The pumping process causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Description : The water from a hand pump is warm in winter because - (1) Our body is cold in winter and the water appears to be warm (2) The temperature inside the earth is higher than the atmospheric ... causes friction which warms up the water (4) Inside water comes out and absorbs heat from the environment

Last Answer : (2) The temperature inside the earth is higher than the atmospheric temperature Explanation: In winter, the outside temperature is lower than that of water flowing out of the pump, and therefore, the ... the outside temperature is higher than the water of the pump, and therefore, it feels cold.

Vehicle tyres are inflated properly – (1) to ensure smooth running. (2) to allow the vehicle to take more load. (3) to avoid skidding and to minimize friction (4) to go fast and save fuel.

Description : Vehicle tyres are inflated properly – (1) to ensure smooth running. (2) to allow the vehicle to take more load. (3) to avoid skidding and to minimize friction (4) to go fast and save fuel.

Last Answer : (3) to avoid skidding and to minimize friction Explanation: Under-inflated tyres create more friction with the road, increasing fuel consumption by up to ten per cent and are prone to skidding on ... or slippery surfaces. Low pressures also lead to premature wear and risk of tyre blowout or bulging.

Rain drops acquire spherical shape due to - (1) viscosity (2) surface tension (3) friction (4) elasticity

Description : Rain drops acquire spherical shape due to - (1) viscosity (2) surface tension (3) friction (4) elasticity

Last Answer : (2) surface tension Explanation: The Surface tension pulls the surface of the drop equally at all points thus produces the spherical shape having the minimum surface area.

It is difficult to walk on ice because of ______. (1) absence of friction (2) less inertia (3) more inertia (4) more mass

Description : It is difficult to walk on ice because of ______. (1) absence of friction (2) less inertia (3) more inertia (4) more mass

Last Answer : (1) absence of friction Explanation: It's difficult to walk on ice because there's very little friction between the bottoms of your shoes and the ice. Friction is a force that opposes motion.

Newton's first law is also known as __. (1) Law of Friction (2) Law of Momentum (3) Law of Inertia (4) Law of Motion

Description : Newton's first law is also known as __. (1) Law of Friction (2) Law of Momentum (3) Law of Inertia (4) Law of Motion

Last Answer : (3) Law of Inertia Explanation: Newton's first law of motion is also known as the law of inenrtia. It states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

The hair of shaving brush clings together when removed from water due to – (1) Surface tension (2) Viscosity (3) Elasticity (4) Friction

Description : The hair of shaving brush clings together when removed from water due to – (1) Surface tension (2) Viscosity (3) Elasticity (4) Friction

Last Answer : (1) Surface tension Explanation: Surface tension is a contractive tendency of the surface of a liquid that allows it to resist an external force. It is revealed, for example, in the floating of ... is caused by cohesion of similar molecules, and is responsible for many of the behaviors of liquids.