Friction is the force that opposes motion between surfaces in contact. It helps in activities like walking, driving, and writing by providing grip and control. However, excessive friction causes wear and tear on machinery and reduces efficiency, requiring lubrication or design improvements to minimize its effects.
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Friction plays a vital role in everyday life by enabling actions like walking, driving, and holding objects, as it prevents slipping and allows control. It is beneficial in braking systems, tires gripping roads, and in machinery where it provides necessary resistance. However, friction can be harmful when it causes excessive wear and tear on surfaces, generates unwanted heat, or increases energy consumption in machines. Balancing friction through lubrication and materials selection helps minimize its negative effects while maximizing its advantages.