Physics Spmnetic! 🔭
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Forwarded from Sir Fahmi
Jom join seminar Fizik malam ni. Banyak tip penting yang akan dikongsikan pada malam ni.

Daftar sekarang: https://contest.ptti.my/belajarbersamaptti

Cek emel selepas pendaftaran untuk info link kelas.
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Pendulum 1 is released and is in motion. Pendulum 2,3,4 and 5 start to oscillate. Name the phenomena mentioned (1m)
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Try explain kenapa kita guna mesh to trap flame mostly
SITUATION 1 :

A student presses a rubber suction cup firmly onto a smooth glass window and removes as much air as possible from beneath it.
When the student tries to pull the suction cup off, it takes a long time and a large force to remove it.

Seorang pelajar menekan penyedut udara getah dengan kuat pada permukaan kaca yang licin sehingga udara di bawahnya dikeluarkan.
Apabila pelajar cuba menanggalkan penyedut udara tersebut, ia mengambil masa yang lama dan daya yang besar untuk menanggalkannya.


SITUATION 2:

Another student places the same suction cup onto a rough wooden surface without pressing it firmly.
When the student tries to pull it off, the suction cup comes off almost immediately with very little force.

Seorang pelajar lain meletakkan penyedut udara yang sama pada permukaan kayu yang kasar tanpa menekannya dengan kuat.
Apabila pelajar cuba menanggalkannya, penyedut udara tersebut tertanggal dengan mudah dan hampir serta-merta.
1. Explain why it takes a longer time to remove the suction cup in Situation 1 compared to Situation 2.

2. State how atmospheric pressure acts in each situation.

3. Identify which situation involves a greater pressure difference and justify your answer.
Good morning 🔥
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