A disc is rolling on the inclined plane, what is the ration of its rotational KE to the total KE? |
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a) |
1:3 |
b) |
3:1 |
c) |
1:2 |
d) |
2:1 |

A disc is rolling on the inclined plane, what is the ration of its rotational KE to the total KE? |
|||||||

a) |
1:3 |
b) |
3:1 |
c) |
1:2 |
d) |
2:1 |

1 Answer

127 votes

The rotational kinetic energy of the disc is The translational kinetic energy is where is the linear velocity of its centre of mass. Now, Therefore, Thus, |

127 votes

127