Question

Name two situations where frictional force can irritate you?​

Answer 1

• Walking - It is impossible to walk on the ground without friction. Friction is what holds your shoe to the ground. The friction present on the ice is very little, this is the reason why it is hard to walk on the slippery surface of the ice.
• Lighting a matchstick - When the head of the matchstick is rubbed against a rough surface, heat is generated and this heat converts red phosphorous to white phosphorous. White phosphorous is highly inflammable and the match stick ignites. Sometimes, matchsticks fail to ignite due to the presence of water. Water lowers friction.

Answer 2

Explanation:

1. Friction produces a lot of heat and wastage of fuel and energy.

2. Noise pollution in machines and wearing and tearing of its parts.