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Question
A body is moving under the action of two forces →F1 = ^2i−^5j; →F2 = ^3i−^4j. Its velocity will become uniform under a third force →F3 given by
A body is moving under the action of two forces →F1 = ^2i−^5j; →F2 = ^3i−^4j. Its velocity will become uniform under a third force →F3 given by
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Solution
The correct option is D −^5i+^9j
A body is moving under the action of two forces→F1=2^i−5^j and →F2=3^i−4^j
A third force →F3 is applied on it such that it becomes uniform which no acceleration or resultant force will be zero. ⟹→F1+→F2+→F3=0 ⟹→F3+5^i−9^j=0⟹→F3=−5^i+9^j
A body is moving under the action of two forces
→F1=2^i−5^j and →F2=3^i−4^j
A third force →F3 is applied on it such that it becomes uniform which no acceleration or resultant force will be zero.
⟹→F1+→F2+→F3=0
⟹→F3+5^i−9^j=0
⟹→F3=−5^i+9^j
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