Question

Give 15 example of undesirable friction

Answer 1

Examples of undesirable friction: A lot of energy is wasted in due to frictional loss. Energy loss takes place in overcoming friction in machinery. Friction produces wear and tear of objects like our soles of shoes which gradually wear off due to friction.

Answer 2

Answer:

•We can write in a black board due to friction some chalk particles get stuk and we see the thing written.

•A lot of energy is wasted in overcoming friction in machineries.

• Its result in weare a tear of object like our soles of shoes and get damage.

•During walking we have to put etra effort.

•Due to fraction the life of macine part reduced

•Its not requar in macinal parts where two parts of macins meet.

•During walking on the road

•In writing on the paper

•To hold or gabbing something

•Rolling friction

•Sliding friction

•Static friction

•Fluid friction

•Pusing a box

•Force acting

•Opposite direction

Explanation:

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