A mass of $$1$$ kg is attached to the middle of a rope, which is being pulled from both the opposite directions. Taking g $$-$$ $$10$$ $$m/s2$$, what is the minimum pull required to completely straighten the rope ?

Correct option is 4infinity , rope cannot be straightened.

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A mass of 1 kg is attached to the middle of a rope, which is being pulled from both the opposite directions. Taking g - 10 m/s², what is the minimum pull required to completely straighten the rope ?

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infinity , rope cannot be straightened.

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detailed solution

Correct option is D

If A, B and C be three vectors acting at a point and their resultant is zero, thenAsin⁡α=Bsin⁡β=Csin⁡γwhere α,β and γ are shown in figure.To straighten the rope, λ should be 180°. Now α=β=90∘∴A=B=Csin⁡180=1×100=∞

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A mass of 1 kg is attached to the middle of a rope, which is being pulled from both the opposite directions. Taking g - 10 m/s2, what is the minimum pull required to completely straighten the rope ?

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A mass of 1 kg is attached to the middle of a rope, which is being pulled from both the opposite directions. Taking g - 10 m/s², what is the minimum pull required to completely straighten the rope ?