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MathematicsVector AlgebraJEE Advanced

Three forces and , each of 15 units, act along , and respectively. The position vectors of , and are , and respectively. The resultant force vector is

Answer: (A)

Solution

A force of magnitude along is .

- , , so $Missing argument for \vec\vec P=(3Missing argument for \vec\vec i+4Missing argument for \vec\vec j-5Missing argument for \vec\vec k)=(3Missing argument for \vec\vec i+4Missing argument for \vec\vec j-5Missing argument for \vec\vec k)=Missing argument for \vec\vec i+6Missing argument for \sqrt\sqrt2 Missing argument for \vec\vec

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Question ID VK-109717