Givr examples to show that friction is both friend and foe
Answers
Answered by
0
As a friend,
Friction plays a vital role in life on Earth. Without friction almost nothing could be done.
1-It is difficult to walk on a slippery road due to low friction. When a person moves on ice, it becomes difficult to walk due to the low friction of the ice with the shoe. The friction between the sole of a shoe and the surface of the ground prevents us from slipping.
2-In everyday life, friction between the road and the tires of a car helps the driver to control the speed of the vehicle. By applying the brakes, it allows you to slow down the car to a stop.
3-Friction also makes writing possible on paper. When a pencil is used, the friction of the paper causes the lead of the pencil to dry.
As a Foe,
1-The main disadvantage of friction is that it produces heat in various parts of the machines. In this way, useful energy is expended as a loss in thermal energy.
2-Due to friction, you have to exert more power in the machines, to overcome the losses.
3-Opposes the motion, i.e, counteracts the movement, so it takes more energy to move.
4-Due to friction, noise occurs in machines.
Hope it helps you.
Friction plays a vital role in life on Earth. Without friction almost nothing could be done.
1-It is difficult to walk on a slippery road due to low friction. When a person moves on ice, it becomes difficult to walk due to the low friction of the ice with the shoe. The friction between the sole of a shoe and the surface of the ground prevents us from slipping.
2-In everyday life, friction between the road and the tires of a car helps the driver to control the speed of the vehicle. By applying the brakes, it allows you to slow down the car to a stop.
3-Friction also makes writing possible on paper. When a pencil is used, the friction of the paper causes the lead of the pencil to dry.
As a Foe,
1-The main disadvantage of friction is that it produces heat in various parts of the machines. In this way, useful energy is expended as a loss in thermal energy.
2-Due to friction, you have to exert more power in the machines, to overcome the losses.
3-Opposes the motion, i.e, counteracts the movement, so it takes more energy to move.
4-Due to friction, noise occurs in machines.
Hope it helps you.
Answered by
0
Answer:
Friction as a friend:
i. friction allows us to grip and catch different object
ii. helps us to work comfortably on the surface
iii. helps to minimise the speed or to Stop The moving objects
Friction is foe:
i. causes wear and tear in object
ii. causes damage to the parts of machine
iii. does not allow the free movement of object
Similar questions