First slide

Rolling motion

Question

When a hollow sphere is rolling without slipping on a rough horizontal surface then the percentage of its total K.E which is Translational is

Easy

A

72%
B

28%
C

60%
D

40%

Solution

$\large % \frac{{K{E_{tran}}}}{{K{E_{total}}}} = \left [ \frac {1}{1+\frac {k^2}{R^2}}\ \right ] \times100$
$\large = \left [ \frac {1}{1+\frac {2}{3}}\ \right ] \times100=60%$

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