The sum of three forces ${\vec F_1} = 100\,N,{\vec F_2} = 80\,N$ and ${\vec F_3} = 60\,N$ acting on a particle is zero. The angle between $\vec F_1$ and $\vec F_2$ is nearly .......... $^o$
The sum of three forces ${\vec F_1} = 100\,N,{\vec F_2} = 80\,N$ and ${\vec F_3} = 60\,N$ acting on a particle is zero. The angle between $\vec F_1$ and $\vec F_2$ is nearly .......... $^o$
- A
$53$
- B
$143$
- C
$37$
- D
$127$
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$(a)$ $\vec{a}+\vec{b}$
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$(c)$ $(\vec{a}+\vec{b}-\vec{c})$
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- [JEE MAIN 2023]
If $\vec{P}+\vec{Q}=\overrightarrow{0}$, then which of the following is necessarily true?
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