NCERT Solutions for Class 9th Science Chapter 5 .4.3 A. Centrifugation — Threads of Curiosity

Book page 855 Updated on2026-09-08

Q1.
The spinning game is a folk dance called phugadi in Marathi and kikli in Punjabi. What is this called in your local language?
Answer

The same two-person spinning game is played all over India and has a different name in each language.

Language / regionName of the game or dance
Marathi (Maharashtra)Phugadi (फुगडी)
Punjabi (Punjab)Kikli (ਕਿੱਕਲੀ)
Konkani (Goa)Fugdi
Gujarati (Gujarat)Ghero / Fugdi

Sample answer: “In my language we call it ______. We hold each other’s crossed hands and spin, and the faster we spin the harder we feel ourselves being pulled outwards.” Ask your grandparents — they will almost certainly know a local name for it.

The science in the game: When you spin, your body keeps trying to move in a straight line, but your partner’s grip keeps pulling you into a circle. From where you stand it feels as if something is throwing you outwards. That outward effect on a body in circular motion is the centrifugal force, and it is exactly the force a centrifuge uses to drive the heavier particles of a mixture to the bottom of a spinning tube.
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