A straight rod of length 
extends from 
to 
. The gravitational force it exerts on point mass ' 
at 
, if the mass per unit length of the rod is 
, is given by:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
JEE Main 2019
Given 
Taking small element 
of length 
at a distance 
from 
so, 
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