Question

What are the disadvantages of friction?​

Answer 1

Friction is the force which opposes relative motion

It always acts opposite to the direction in which force acts

It is useful in many ways,but at the same time it has demerits also viz,

1)Due to friction wear and tera of machines increases

2)The heavy machinery needs lots of fuel to work against friction

3)Sometimes friction produces heat in the machinery or its parts.

4) Friction produces noise in machinery

5)Forest fires are due to friction between the branches of the trees.

6)Extra friction makes it difficult to move an object, such as sliding a box across the ground or walking in deep snow.

7)Any device that has moving parts can quickly wear out due to friction. An example of friction wears, is a rough draft.

Hope it makes brainliest

Answer 2

Good question!

__________________Hey mate here is your answer______________________

Disadvantages of friction:

• Friction wears out the rubbing surfaces like screws and ball bearings of machines or soles of shoes.

• The object in contact require more force to overcome friction between their rubbing surfaces. This results in wastage of energy.

• You already know that friction generates heat.This heat raises the temperature of a machine, sometimes causing damage to its parts.Hence,proper arrangements have to be made to keep the machine cool.For example,insulation of windings of machines like mixer grinders, hair dryers, etc. may get spoiled due to friction and the motor may burn.

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