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The frictional force between two surfaces is independent of
  • a)
    nature of surface 
  • b)
    mass of the body 
  • c)
     area of contact  
  • d)
    None of these  
Correct answer is option 'C'. Can you explain this answer?
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The frictional force between two surfaces is independent ofa)nature of...
The frictional force between two surfaces 
where μs depends on the nature of surface and their materials. Thus, frictional force is independent of area of contact of the surfaces.
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The frictional force between two surfaces is independent ofa)nature of...
The frictional force between two surfaces 
where μs depends on the nature of surface and their materials. Thus, frictional force is independent of area of contact of the surfaces.
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The frictional force between two surfaces is independent ofa)nature of...
Frictional force is the force that opposes the relative motion between two surfaces in contact. It occurs due to the interlocking of irregularities on the surfaces, which creates resistance to motion. The frictional force has several characteristics, and one of them is that it is independent of the nature of the surface, the mass of the body, and only dependent on the area of contact.

Nature of Surface:
The nature of the surface refers to the material properties, roughness, and texture of the surfaces in contact. The frictional force is independent of the nature of the surface because it depends on the interlocking of irregularities, which can occur regardless of the material. For example, if you try to push a wooden block on a wooden table or a metal block on the same table, the frictional force experienced will be the same.

Mass of the Body:
The mass of the body refers to the amount of matter present in an object. The frictional force is independent of the mass of the body because it is a force that opposes motion and is not influenced by the amount of matter present. Whether the object is heavy or light, the frictional force experienced will be the same if the other conditions remain constant.

Area of Contact:
The area of contact refers to the surface area in contact between the two objects. The frictional force is dependent on the area of contact. The larger the area of contact, the greater the frictional force, and vice versa. This can be observed when you try to slide a heavy object on a rough surface. If the area of contact is increased by using a larger surface, the frictional force will also increase, making it harder to move the object.

Explanation:
Considering the given options, the correct answer is option 'C' - area of contact. The frictional force is directly proportional to the area of contact. This means that if the area of contact is increased, the frictional force will also increase. However, the nature of the surface and the mass of the body do not affect the frictional force. The interlocking of irregularities and the resistance to motion are independent of the material or mass. Only the area of contact plays a role in determining the magnitude of the frictional force.
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Bearing:Bearings are used to convert sliding friction into rolling friction. Metal-upon-metal contact produces large amounts of friction. The friction adds to wear and tear of the metal, producing grinding that slowly degrades the metal. Bearings reduce friction by having the two surfaces roll over each other. They consist of a smooth metal ball or roller that rolls against a smooth inner and outer metal surface. The rollers or balls take the load, allowing by the device to spin. The two basic types of rolling element distinguish the two basic types of rolling bearing:• ball → ball bearing• roller → roller bearingBalls make point contact with the ring raceways. With increasing load acting on the bearing, the contact point becomes an elliptical area. The small contact area provides low rolling friction, which enables ball bearings to accommodate high speeds but also limits their load-carrying capacity.Rollers make line contact with the ring raceways. With increasing load acting on the bearing, the contact line becomes somewhat rectangular in shape. Because of the larger contact area and the consequently higher friction, a roller bearing can accommodate heavier loads, but lower speeds, than a same-sized ball bearing.In roller contacts are

Bearing:Bearings are used to convert sliding friction into rolling friction. Metal-upon-metal contact produces large amounts of friction. The friction adds to wear and tear of the metal, producing grinding that slowly degrades the metal. Bearings reduce friction by having the two surfaces roll over each other. They consist of a smooth metal ball or roller that rolls against a smooth inner and outer metal surface. The rollers or balls take the load, allowing by the device to spin. The two basic types of rolling element distinguish the two basic types of rolling bearing:• ball → ball bearing• roller → roller bearingBalls make point contact with the ring raceways. With increasing load acting on the bearing, the contact point becomes an elliptical area. The small contact area provides low rolling friction, which enables ball bearings to accommodate high speeds but also limits their load-carrying capacity.Rollers make line contact with the ring raceways. With increasing load acting on the bearing, the contact line becomes somewhat rectangular in shape. Because of the larger contact area and the consequently higher friction, a roller bearing can accommodate heavier loads, but lower speeds, than a same-sized ball bearing.In ball bearing, contacts are

Bearing:Bearings are used to convert sliding friction into rolling friction. Metal-upon-metal contact produces large amounts of friction. The friction adds to wear and tear of the metal, producing grinding that slowly degrades the metal. Bearings reduce friction by having the two surfaces roll over each other. They consist of a smooth metal ball or roller that rolls against a smooth inner and outer metal surface. The rollers or balls take the load, allowing by the device to spin. The two basic types of rolling element distinguish the two basic types of rolling bearing:• ball → ball bearing• roller → roller bearingBalls make point contact with the ring raceways. With increasing load acting on the bearing, the contact point becomes an elliptical area. The small contact area provides low rolling friction, which enables ball bearings to accommodate high speeds but also limits their load-carrying capacity.Rollers make line contact with the ring raceways. With increasing load acting on the bearing, the contact line becomes somewhat rectangular in shape. Because of the larger contact area and the consequently higher friction, a roller bearing can accommodate heavier loads, but lower speeds, than a same-sized ball bearing.Bearing converts

Bearing:Bearings are used to convert sliding friction into rolling friction. Metal-upon-metal contact produces large amounts of friction. The friction adds to wear and tear of the metal, producing grinding that slowly degrades the metal. Bearings reduce friction by having the two surfaces roll over each other. They consist of a smooth metal ball or roller that rolls against a smooth inner and outer metal surface. The rollers or balls take the load, allowing by the device to spin. The two basic types of rolling element distinguish the two basic types of rolling bearing:• ball → ball bearing• roller → roller bearingBalls make point contact with the ring raceways. With increasing load acting on the bearing, the contact point becomes an elliptical area. The small contact area provides low rolling friction, which enables ball bearings to accommodate high speeds but also limits their load-carrying capacity.Rollers make line contact with the ring raceways. With increasing load acting on the bearing, the contact line becomes somewhat rectangular in shape. Because of the larger contact area and the consequently higher friction, a roller bearing can accommodate heavier loads, but lower speeds, than a same-sized ball bearing.With increasing load on roller bearing the contact line

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The frictional force between two surfaces is independent ofa)nature of surfaceb)mass of the bodyc)area of contact d)None of these Correct answer is option 'C'. Can you explain this answer?
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