Which forces are needed for the rotational mo | vedclass

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(B) For an object to undergo rotational motion about a fixed axis, it must experience a torque $(	au)$.Torque is defined as $\vec{	au} = \vec{r} 	i

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$A$ force whose line of action does not intersect the axis of rotation.

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(B) For an object to undergo rotational motion about a fixed axis, it must experience a torque $(	au)$.Torque is defined as $\vec{	au} = \vec{r} 	imes \vec{F}$, where $\vec{r}$ is the position vector from the axis of rotation to the point of application of the force, and $\vec{F}$ is the applied force.If the line of action of the force passes through the axis of rotation, the perpendicular distance (lever arm) is zero, resulting in zero torque.Therefore, to produce rotational motion, the force must have a line of action that does not intersect the axis of rotation, ensuring a non-zero torque is applied.

Which forces are needed for the rotational motion about a fixed axis?

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