A ring of mass m is rolling without slipping with linear speed v as shown in figure. Four particles each of mass m are also attached at points A, B, C and D. Find total kinetic energy of the system.
A
6mv2
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B
3mv2
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C
mv2
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D
5mv2
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Solution
The correct option is D5mv2
Let the radius of the ring be R.
We know that in case of pure rolling, ω=vR and vA=0
Since the angular velocity ω is constant, so we can write,