Question

3. Give
two advantages and two
disadvantages of friction.​

Answer 1

Answer:

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. ... A lot of money goes into preventing friction and the usual wear and tear caused by it by using techniques like greasing and oiling.

Explanation:

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Answer 2

Advantages
1. Friction help us to walk
2. It help us to support ladder against the wall
Disadvantages
1. It causes wear and tear of the machines
2.forest fire are caused by the friction between the branches of the trees