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A straight rod of length L extends from ...

A straight rod of length `L` extends from `x=a` to `x=L+a`. Find the gravitational force exerts on a point mass `m` at `x=0` is (if the linear density of rod`mu=A+Bx^(2)`)

A

`Gm(a(1/alpha-1/(alpha+l))+bl)`

B

`(Gm(a+bx^2))/l^2`

C

`Gm(alpha(1/a-1/(a+l)+bl)`

D

`Gm(a(1/(alpha+l)-1/alpha))+bl)`

Text Solution

Verified by Experts

The correct Answer is:
A
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