Give examples to show that friction is both a friend and a foe.

Answer

Friction is both a friend and a foe to us

frication is necessary evil.jpg

Friction is a friend because

It helps us walk without slipping

Moving objects Stop

Picking and Holding Things

Writing

Lighting a matchstick

Fixing a Nail in Wall

 

Common image of advantages form Theory

 

Friction is our foe because

It wears out different products like

  • Soles of shoe
  • When we wear shoes,soles wear out after some time because of friction
  • Steps of bridges
  • Ball bearings
  • Tyres of car

 

It increases heat which may damage machines

It Slows down speed of Object

 

 

  1. Class 8
  2. Chapter 12 Class 8 - Friction

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 9 years and a teacher from the past 16 years. He teaches Spoken English, Written English, Grammar and Vocabulary at Englishtan.