A ring ( mass 2g) is roatating about ins axis with an angular velocity of ∏ rad/s . Two body of equal masses ( 5g ) are fixed at the two end points of a diameter. Now what will be the angular velocity of the ring?Thanking you in anticipation.
Subhajit Chakraborty , 14 Years ago
Grade 12
1 Answers
Anurag Kishore
Last Activity: 14 Years ago
Hi
In these type of questions use conservation of angular momentum about axis of rotation
For ring I = MR2
use
I1w1 = I2 w2 where M = 2g and m = 5g
=> MR2 ∏ = (MR2 + 2mR2) w
=> 2∏ = (2+2*5)w
=> w = 2∏/12 = ∏/6 rad/sec
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