NEET UG PHYSICS MCQ: MOTION IN PLANE

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If a body is in equilibrium under a set of non-collinear forces, then the minimum number of forces has to be

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Correct option: B

three

Option B (three) is correct because at least three non-collinear forces are required to achieve equilibrium, as two forces would need to be collinear to balance each other.

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Acceleration due to gravity: The magnitudes of the two vectors

\mathrm{\vec a}\,and\,\mathrm{\vec b}

are a and b respectively. The vector product of

\mathrm{\vec a}\,and\,\mathrm{\vec b}

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\overrightarrow P \,\,.\,\,\overrightarrow Q = 0\,and\,\overrightarrow P \,\, \times \,\,\overrightarrow Q = 0

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\overrightarrow Q \,and\,\overrightarrow R

is What happens, when we multiply a vector by -2 ? Which of the following is not true? If

\vec{A}=3 \hat{i}+4 \hat{j}

and

\vec{B}=6 \hat{i}+8 \hat{j}

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\overrightarrow{\mathrm{A}}

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\overrightarrow{\mathrm{B}}

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{\cot ^{ - 1}}\left( 2 \right)

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