A. Operation of a grinding machine
B. Walking
C. Application of brakes
D. Moving piston in a sleeve

Correct Answer:

Option D – Moving piston in a sleeve

Explanation

friction, force that resists the sliding or rolling of one solid object over another.

Examples of friction in our daily life

  • Driving a vehicle on a surface.
  • Applying brakes to stop a moving vehicle.
  • Skating.
  • Walking on the road.
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