Under what conditions is the torque zero?

That is, when line of action of forces passes through the axis of rotation, torque is zero.

Can a reaction force be zero?

When a body lies on the surface of the Earth it is under the influence of gravity. The force on the body due to gravity causes it to exert a force on the ground and the normal reaction acts in the opposite direction causing the resultant force on the body to be zero.

Is torque a reaction force?

A torque is exactly the same as two equal and opposite forces acting at different points on a body. Each force has an equal and opposite reaction force, and the reaction forces are the same as an equal and opposite torque.

Can there be force but no torque?

Since torque is always about some point, if there’s a net force on an object you can always find some point about which there will be a torque. But you can certainly have a net force on an object that gives no torque about its center of mass.

When a torque acting on a system is zero Which of the following is constant?

angular momentum
Explanation : When the torque acting upon a system is zero, the angular momentum is constant and hence is conserved.

What are action-reaction forces?

Action-reaction forces are equal and opposite forces that act on different objects, so they don’t cancel out. In fact, they often result in motion. Think about Jerod again. He applies force with his foot to the ground, whereas the ground applies force to Jerod and the skateboard, causing them to move forward.

Do action and reaction forces make the net force zero?

“If A pushes B, then B pushes A with an equal and opposite force. If these forces are equal and opposite, they cancel, producing a net force of zero.

What is torque reaction?

Reaction torque is the force that acts on an object when it is not free to rotate. In the workplace setting, reaction torque usually refers specifically to the force produced by electrically powered tightening tools. Reaction torque is also referred to as torque reaction.

What is a torque reaction arm?

Torque Reaction Arms are used to absorb and transfer the reaction force generated at the screwdriver during fastening and balance the weight of the tool without having a significant effect on freedom of movement or dexterity.

Does zero net torque imply zero net force?

For an object to be in equilibrium, it must be experiencing no acceleration. This means that both the net force and the net torque on the object must be zero.

What is a nonzero net torque?

If the net torque is not zero, there will be angular acceleration. It implies the angular velocity will be continuously changing. Conversely, if angular velocity is not changing, that is , if angular velocity is constant, angular acceleration is zero and there is no torque.