If the line of action of the applied force intersects the Axis of rotation, then the torque of this force about the axis of rotation is

Always zero

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Always non-zero perpendicular to the axis of rotation

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Sometime non-zero

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Non-zero and along the axis of rotation

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A
Always zero

Torque of force $\to F$ can be mathematically stated as,
$\to T$ = $\to r$ $x$ $\to F$ Hence, if line of action of force intersects the Axis of rotation at point O then consider your origin to be at O and $| \to T |$ = 0
So it will be zero about any point considered on Axis of rotation. i.e., It will have no turning effect upon the body about the axis of rotation.

Suggest Corrections

Similar questions

If a body is rotating about a given Axis and a Force is applied at any point on that body along any random direction, what can we say about the torque of this force about any point lying on its Axis of rotation?

Q. Which of the following are means of maximizing the torque of a force applied to a rotating object?
I. Maximize the magnitude of the applied force.
II. Apply the force as close as possible to the axis of rotation.
III. Apply the force perpendicular to the displacement vector between the axis of rotation and the point of applied force.

Q. By which of the following ways we can maximise the torque of a force applied to a rotating object?
I. Maximise the magnitude of the applied force.
II. Reduce the distance of a point from the axis of rotation at which force is applied.
III. Apply the force perpendicular to the displacement vector between the axis of rotation and the point of applied force.

Q. The handle of a door is at a distance

40 c m

from axis of rotation. If a force

5 N

is applied on the handle in a direction

30^{0}

with plane of door, then the torque is:

Q. A square plate lies in an X-Y plane such that its centre is at the origin and can rotate about Z-Axis. If a force is applied on it such that the line of force intersects Z-Axis, then?

Join BYJU'S Learning Program