JEE Main 12 Jan 2019 Shift 1 Solved Paper

Section: Physics

Question : 4 of 90

Marks: +1, -0

A straight rod of length L extends from x = a to x = L + a. The gravitational force is exerts on a point mass 'm' at x = 0, if the mass per unit length of the rod is A + Bx2, is given by:

[12 Jan 2019 Shift 1]

Gm [A(
1
a+L
−
1
a
)−BL]
Gm [A(
1
a
−
1
a+L
)+BL]
Gm [A(
1
a+L
−
1
a
)+BL]
Gm [A(
1
a
−
1
a+L
)−BL]

Validate

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