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NEET 1994 (AIPMT) · Rolling Motion

Rolling Motion question from NEET 1994 (AIPMT)

Q91NEET 1994 · AIPMTEasy

Rolling Motion

A solid spherical ball rolls on a table. Ratio of its rotational kinetic energy to total kinetic energy is

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Answer: (d)

  1. Solid sphere: Kr=15mv2K_r = \frac{1}{5}mv^2, Ktotal=710mv2K_{total} = \frac{7}{10}mv^2.
  2. KrKtotal=1/57/10=27\frac{K_r}{K_{total}} = \frac{1/5}{7/10} = \frac{2}{7}
  3. So the answer is (d) 27\frac{2}{7}.
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