Give two examples to show that friction is an evil.
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The two disadvantages of friction are;
1 Friction wears out the rubbing surfaces like screws a ball bearing of machines or soles of shoes.
2 The objects in contact require more force to overcome friction between their rubbing surfaces. This results in wastage of energy.
1 Friction wears out the rubbing surfaces like screws a ball bearing of machines or soles of shoes.
2 The objects in contact require more force to overcome friction between their rubbing surfaces. This results in wastage of energy.
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