Question

write a short note 'friction is our friend

Answer 1

Answer:

Examples to show that friction is a friend .: Friction is friend: (i) Friction allows us to grip and catch different objects. (ii) It helps us to walk comfortably on the surface. (iii) It helps to minimize the speed or to stop the moving objects.

Answer 2

Friction plays a very important role in our daily life. In some cases friction is useful and in some cases friction is harmful and we wish to reduce it.
Friction as a friend:
1. Friction enables us to walk without slipping.
2. Friction enables a car to move on road without skidding.
3. Friction enables us to apply brakes or slow down a moving vehicle.
4. Friction enables us to write and draw on paper.
5. friction enables us to pickup and hold things in our hands.
6. Nails can be fixed in a wall due to friction.
7.Friction enables us to light a matchstick.
Friction as Foe:
1. Friction wears away the soles of our shoes.
2. The tyres of vehicles wear out gradually due to friction.
3. Friction wear out the rubbing machine parts.
4. Friction wears out the brake pad of vehicle gradually.
5. Friction produces heat which may damage machines.
6. Friction reduced the efficiency of machines.
7.. Friction slows down the motion.