Question

How is the heat produced by friction both and advantage and a disadvantage?​

Answer 1

Answer:

ADVANTAGES OF FRICTION

Friction plays a vital role in our daily life. Without friction we are handicap.

1. It is becomes difficult to walk on a slippery road due to low friction. When we move on ice, it becomes difficult to walk due to low friction of ice.

2. We can not fix nail in the wood or wall if there is no friction. It is friction which holds the nail.

3. A horse can not pull a cart unless friction furnishes him a secure Foothold.

4. We can write on a paper or on a board.

5. Friction helps in applying the brakes.

6. It helps in walking on floor.

7. Coffee mug stays on the dashboard

8. Shuffling across a carpet to shock someone

9. Draging of atmosphire with earth is possible

10. Helps to pevents the life on earth by burning astroids.

DISADVANTAGES OF FRICTION

Despite the fact that the friction is very important in our daily life, it also has some disadvantages like:

1. The main disadvantage of friction is that it produces heat in various parts of machines. In this way some useful energy is wasted as heat energy.

2. Due to friction we have to exert more power in machines.

3. It opposes the motion.

4. Due to friction, noise is also produced in machines.

5. Due to friction, engines of automobiles consume more fuel which is a money loss.

6. Machine efficency is decreased: energy input is lost to heat

7. Getting shocked by doorknobs

8. Rug burn

9. It counteracts movement and so it takes more energy to move, it can cause unwanted heat (e.g. in machine parts), and it wears things out like shoes.

10. Forest fires are caused due to friction between branches of trees

Answer 2

Answer:

✯ADVANTAGES OF FRICTION

Friction plays a vital role in our daily life. Without friction we are handicap.

• We can write on a paper or on a board.

• Friction helps in applying the brakes.

• It helps in walking on floor.

• Coffee mug stays on the dashboard

• Shuffling across a carpet to shock someone

• Draging of atmosphire with earth is possible

• Helps to pevents the life on earth by burning astroids.

• It helps to support ladder against wall.

• It becomes possible to transfer one form of energy to another.

• Objects can be piled up without slipping

• Breaks of vehicles work due to friction.

✯DISADVANTAGES OF FRICTION

Despite the fact that the friction is very important in our daily life, it also has some disadvantages like:

• The main disadvantage of friction is that it produces heat in various parts of machines. In this way some useful energy is wasted as heat energy.

• Due to friction we have to exert more power in machines.

• It opposes the motion.

• Due to friction, noise is also produced in machines.

• Due to friction, engines of automobiles consume more fuel which is a money loss.

• Machine efficency is decreased: energy input is lost to heat

• Getting shocked by doorknobs

• Rug burn

• It counteracts movement and so it takes more energy to move, it can cause unwanted heat (e.g. in machine parts), and it wears things out like shoes.

• Forest fires are caused due to friction between branches of trees
• It always resists the motion, so extra energy is required to overcome it.

• .Since friction is very useful in some cases while harmful in some cases, friction is called a necessary evil.

Explanation:

LET'S EXPLORE MORE

✯What is Friction?

The resistance offered by the surfaces that are in contact with each other when they move over each other.

✯Factors Affecting Friction

Following are the two factors on which friction depends:

• On the nature of the two surfaces that are in contact

Friction is dependent on the smoothness or roughness of the two surfaces that are in contact with each other. When the surface is smooth, the friction between the two reduces as there is no much interlocking of irregularities taking place. While the surface is rough, friction increases.

• On the force that is acting on these surfaces

When force is applied along with the irregularities, friction increases.

✯laws of friction:

• Friction depends on the roughness or smoothness of the surfaces that are in contact.
• Friction is independent of the area that is in contact.
• Friction is proportional to the force acting on the contacting surfaces.
• Fluid friction increases with increase in the relative speed.

✯Types of Friction

There are four types of friction:

• Static friction
• Sliding friction
• Rolling friction
• Fluid friction

—☆Static Friction

Static friction is defined as the frictional force that acts between the surfaces when they are at rest with respect to each other.

The magnitude of the static force is equal in the opposite direction when a small amount of force is applied. When the force increases, at some point maximum static friction is reached.

✧Static Friction Examples

Following are the examples of static friction:

• Skiing against the snow
• Creating heat by rubbing both the hands together
• Table lamp resting on the table

✧Coefficient Of Static Friction

The coefficient of static friction is denoted as µs. The maximum force of static friction is given as the product of the coefficient of static friction and normal force and force of static friction is less than or equal to the product of the coefficient of static friction and normal force. It is given as:

$</p><p></p><p>F _{s} ^{max}  = µ _{s} η and F _{s}  ≤ µ _{s} η</p><p></p><p>$

—☆Sliding Friction

✧What Is Sliding Friction?

Sliding friction is defined as the resistance that is created between any two objects when they are sliding against each other.

✧Examples Of Sliding Friction

Following are the examples of sliding friction:

• Sliding of the block across the floor
• Two cards sliding against each other in a deck

✧Coefficient Of Sliding Friction

The coefficient of sliding friction is denoted as µs. The force of sliding friction is defined as the product of the coefficient of sliding friction and the normal force. It is given as:

$</p><p></p><p>F _{s}  = µ _{s} . F _{n}</p><p></p><p>$

—☆Rolling Friction

✧What Is Rolling Friction?

Rolling friction is defined as the force which resists the motion of a ball or wheel and is the weakest types of friction.

✧Examples Of Rolling Friction

Following are the examples of rolling friction:

• Rolling of the log on the ground
• Wheels of the moving vehicles

✧Coefficient Of Rolling Friction

The coefficient of rolling friction is denoted as µr. The force of rolling friction is defined as the product of the coefficient of rolling friction and the normal force. It is given as:

$</p><p>F _{s} = µ _{r} . F _{n}</p><p></p><p>$

—☆Fluid Friction

✧What Is Fluid Friction?

Fluid friction is defined as the friction that exists between the layers of the fluid when they are moving relative to each other.

✧Examples Of Fluid Friction

Following are the examples of fluid friction:

• The flow of ink in pens
• Swimming