A straight rod of length 
has one of its ends at the origin and the other at 
. If the mass per unit length of the rod is given by 
where 
is constant, where is its mass centre?
a)
b)
c)
d)
A straight rod of length has one of its ends at the origin and the other at . If the mass per unit length of the rod is given by where is constant, where is its mass centre?
a)
b)
c)
d)
Question ID - 52976 | SaraNextGen Top Answer
A straight rod of length has one of its ends at the origin and the other at . If the mass per unit length of the rod is given by where is constant, where is its mass centre?
a)
b)
c)
d)
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A straight rod of length |
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b) |
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c) |
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d) |
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1 Answer
127 votes
Answer Key / Explanation : (c) -
(c)
Let the mass of an element of length 
of the rod located at a distance 
away from left end is 
. The 
- coordinate of the centre of mass is given by
.png)
Total mass of rod 
Hence, the centre of mass is at 
127 votes
Answer Link
127