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`        a disc is rotating with angular velocity 100r/s and moment of inertia 2kgm^2 .another identical disc rotating in opposite direction is placed coaxially.they continue to rotate.what is loss in kinetic energy?`
one year ago

Robin
19 Points
```								First, we will apply conservation of Angular momentum so that we can find Final Angular velocity.	Initial angular momentum=Final angular momentum	I1W1  + I2W 2 = IfinalWfinal 	2×100  + 2×0   =   ( 2+2 ) × Wfinal	Wfinal  =  50  rad/ sec  	Change in K.E =  ½ × ( I1 × I2 ) ÷ ( I1 + I2 )  × ( Winitial− WFinal )	Put the values and get the answer.	If you don’t get the answer please let me know.	Have Fun
```
one year ago
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• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions

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