If linear density of a rod of length 3 m varies as =2+ , then the position of the centre of gravity of the rod is |
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a) |
b) |
c) |
d) |

If linear density of a rod of length 3 m varies as =2+ , then the position of the centre of gravity of the rod is |
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a) |
b) |
c) |
d) |

1 Answer

127 votes

**(b)**

Let rod is placed along -axis. Mass of element of length situated at is

The CM of the element has coordinates ( , 0, 0).

Therefore, -coordinates of CM of the rod will be

m

127 votes

127