A wheel is rotating with a speed of 500 rpm on a shaft. Second identical wheel, initially at rest is suddenly coupled on the same shaft. What is the speed of the resultant combination ? Assume that the moment of inertia of the shaft is negligible.

A wheel is rotating with a speed of 500 rpm on a shaft. Second identic

1.	A wheel is rotating with a speed of 500 rpm on a shaft. Second identical wheel, initially at rest is suddenly coupled on the same shaft. What is the speed of the resultant combination ? Assume that the moment of inertia of the shaft is negligible.
Answer» Solution :`I_(1)omega_(1)=I_(2)omega_(2)` `I_(1)n_(1)=I_(2)n_(2)` `I_(1)(500)=2I_(1)n_(2)` `:.n_(2)=250` rpm