Physics · Rotational Mechanics
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 the 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:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 132ω
- 223ω✓
- 354ω
- 445ω
Correct answer
23ω
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