A chandelier of mass  18kg hangs from a cable that is attached to a ceiling. The chandelier is at rest and initially the cable hangs vertically. Alice climbs up the stairs to a height level that is close to the chandelier's height. She then pulls the chandelier to one side using a hook, to bring the chandelier closer to her so she can replace a light bulb. The force that Alice exerts on the chandelier is in the horizontal direction and has magnitude 42 N.

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.