a. List three advantages and disadvantages of
friction.
Answers
Answer:
advantages
1. Without friction we can't walk and move from one place to other.
2. we can't stand at any one place we always fall
Answer:
Advantages of Friction:
Friction is responsible for many types of motion
It helps us walk on the ground
Brakes in a car make use of friction to stop the car
Asteroids are burnt in the atmosphere before reaching Earth due to friction.
It helps in the generation of heat when we rub our hands.
Disadvantages of Friction:
Friction produces unnecessary heat leading to the wastage of energy.
The force of friction acts in the opposite direction of motion, so friction slows down the motion of moving objects.
Forest fires are caused due to the friction between tree branches.
A lot of money goes into preventing friction and the usual wear and tear caused by it by using techniques like greasing and oiling.