Question

Explain how friction is a curse as well as boon

Answer 1

Curse.- 1. Friction leads to loss of energy
2. Friction results in water and tear
3. Friction reduces the efficiency of materials

Boon-1. The horizontal component of friction helps in walking
2. Friction brings objects to stop
3. Friction provides necessary torque for rolling of tyres

Answer 2

1.  we walk due to friction .our shoes rub over the ground and therefore we are able to walk steadily.if there was no friction we would simply slip over like slipping over an bannana.
2.  space shuttles waste tons of fuel to overcome the friction of our atmosphere and reach the exosphere.the burning fuel leads to pollution>global warming>damage to life inpoles>damge to life in other continents