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  is constant, where is its mass centre? a) b) c) d)

Question ID - 53208 :- 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  is constant, where is its mass centre? a) b) c) d)

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Answer Key : (b) -

(b)

Let the mass of an element of length  of rod located at a distance  away from left end is . The -coordinate of the centre of mass is given by

=

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