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Three forces act on a body. Two of them are 7î – 13ĵN and 2î – 11ĵ. What is the value of the other force?

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Three forces act on a body. Two of them are 7î – 13ĵN and 2î – 11ĵ. What is the value of the other force?

(a) -9î + 24ĵ

(b) -24î + 9ĵ

(c) 24î + 9ĵ

(d) -9î – 24ĵ

This question was addressed to me during an interview.

My query is from Laws of Motion topic in division Laws of Motion of Physics – Class 11

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The correct option is (a) -9î + 24ĵ

The best explanation: For the body to remain in equilibrium, the total force on it should be zero. As two of the forcesare given, the other force can be found out by subtracting the sum of both the given forces from zero. Hence the answer is -9î + 24ĵ.

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