A body is in equilibrium under the influence | vedclass

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(D) For a body to be in equilibrium,the net force $\vec{F}_{net} = 0$ and the net torque $\vec{	au}_{net} = 0$ about any point.$1$. If $3$ forces hav

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All of the above

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(D) For a body to be in equilibrium,the net force $\vec{F}_{net} = 0$ and the net torque $\vec{	au}_{net} = 0$ about any point.$1$. If $3$ forces have lines of action that are not parallel and are concurrent,they can form a closed triangle of forces,resulting in equilibrium.$2$. If $3$ forces have parallel lines of action,they can be in equilibrium if two forces act in one direction and the third acts in the opposite direction such that their magnitudes and positions satisfy the conditions for zero net force and zero net torque.$3$. If $4$ forces have parallel lines of action and equal magnitudes,they can be arranged (e.g.,two pairs acting in opposite directions) to satisfy the equilibrium conditions.Since all the given conditions ($A$,$B$,and $C$) allow for a body to be in equilibrium,the correct answer is $D$.

$A$ body is in equilibrium under the influence of a number of forces. Each force has a different line of action. The minimum number of forces required is:

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