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