Question

why is friction considered to be a hindrance? Give examples.

Answer 1

1) In machines, efficiency reduces due to friction has energy may be lost as heat.
2) When one falls and slides over rough surface like cement, then the injury caused is more.
3) Opening a rusted dooor

Answer 2

Friction is considered as a hindrance because we get irritated when we play carroms,if lubricant is not there we get irritated. While dragging some heavy loads,we get irritating mindset but we invite that it was a necessaria evil so friction is hindrance but useful