Torque is not zero due action and reaction force true or false
The equal and opposite reaction force acts at the same point, so no torque there.
HOWEVER that does NOT mean you can not spin a wheel with a fixed axle.
If you push at rim with force F, the wheel pushes back against your hand with equal and opposite F.
So far no torque to start a a spin.
However so far the net EXTERNAL force on the wheel is F and it would move forward.
SO
if it is not to move forward there must be an equal and opposite force F exerted on the wheel by the bearings at the axle and of course by the axle on the bearings.
Thus net external force = F - F = ZERO
HOWEVER
F at rim forward, and F at axle backward
There is indeed a net Torque now = F * Radius of wheel
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False. Torque can indeed be zero even when there are action and reaction forces present. Torque is the product of force and the perpendicular distance from the pivot point to the line of action of the force. If the action and reaction forces are applied along the same line, then their torque about any given pivot point will add up to zero.
False.
The statement "Torque is not zero due to action and reaction force" is incorrect. Torque is a measure of the rotational force or moment applied to an object. It depends on two factors: the magnitude of the force applied and the distance from the axis of rotation at which the force is applied.
In the case of action and reaction forces, which are pairs of equal and opposite forces, the torques produced by these forces on an object cancel each other out when they act along the same line of action. This means that the total torque will be zero.
Therefore, in the context of action and reaction forces, the torque is indeed zero.
False. Torque can be zero even when there is an action and reaction force. Torque is a rotational force that produces or tends to produce rotation around an axis. It is calculated by multiplying the force applied to an object by the perpendicular distance from the axis of rotation to the line of action of the force.
If the action and reaction forces have equal magnitudes and act along the same line, but in opposite directions, the torques they produce will cancel out, resulting in a net torque of zero. This occurs when the forces are applied at equal distances from the axis of rotation. In this case, the object will remain in rotational equilibrium and have no tendency to rotate.
For example, consider a see-saw where two people are pushing on opposite ends. If the forces they apply are equal in magnitude and act along the same line, but in opposite directions, the torques they produce will cancel each other out, resulting in no net torque on the see-saw.
In summary, torque can be zero even when there are action and reaction forces, as long as they have equal magnitudes and act along the same line but in opposite directions.