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A weightless rod is acted upon by two up...

A weightless rod is acted upon by two upward parallel forces of `2 N` and `4 N` at ends `A` and `B` respectively. The total length of the rod `AB = 3 m`. To keep the rod in equilibrium a force of `6 N` should act in the following manner.

A

downwards at any point between A and B

B

downwards at mid point of AB

C

downwards at a point C such that AC=1 m

D

downwards at a point D such that BD=1 m

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The correct Answer is:
D
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