A thin circular disc of mass M and radius R is rotating in a horizontal plane about an axis passing through its centre and perpendicular to its plane with angular velocity \omega. If another disc of same dimensions but of mass {\M} \/ 2 is placed gently on the first disc co-axially, then the new angular velocity of the system is : [8 Apr 2024 Shift 2]

JEE Main 8 Apr 2024 Shift 2 Solved Paper

Section: Physics

Question : 36 of 90

Marks: +1, -0

A thin circular disc of mass M and radius R is rotating in a horizontal plane about an axis passing through its centre and perpendicular to its plane with angular velocity ω. If another disc of same dimensions but of mass M∕2 is placed gently on the first disc co-axially, then the new angular velocity of the system is :

[8 Apr 2024 Shift 2]

‌
4
5
ω
‌
5
4
ω
‌
2
3
ω
‌
3
2
ω

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