When there is no torque acting on a rotating body?

When there is no torque acting on a rotating body?

Answer Expert Verified. if external torque zero , then angular momentum will be conserved . e.g angular momentum will be constant .

What happens to a rotating object in absence of torque?

When an object is spinning in a closed system and no external torques are applied to it, it will have no change in angular momentum. If the net torque is zero, then angular momentum is constant or conserved.

Can an object rotate if there is no torque acting on it?

Because there is no net torque acting on an object in equilibrium, an object at rest will stay at rest, and an object in constant angular motion will stay in angular motion. If the system was rotating with a uniform angular velocity, it would continue rotating at the same angular velocity.

When the external torque acting on a rotating body is zero the quantity that will remain constant is?

angular momentum
When the total external torque acting on the system is zero, then the total angular momentum of the system is conserved.

When there is no torque and force then system is called?

For a body to be in equilibrium, there must be no net force acting on it. In addition, there must be no net torque acting on it. Figure 17A shows a body in equilibrium under the action of equal and opposite forces. This force is called the equilibrant.

When there is no external torque acting on a body moving in elliptical path identify the quantities remain constant?

When the net external torque acting on a system is zero, the total angular momentum of the system remains constant. Therefore the angular momentum of a moving body remains constant if net external torque is not applied.

Why do spinning objects keep spinning?

So it is inertia (the moment of inertia if rotation). It keeps rotating at constant angular frequency since it resists a possible change out of nowhere. Massive objects spin due to gravity.

What do we call the tendency of a spinning object to continue to spin?

Rotational Inertia. Rotational inertia is the tendency of a rotating object to remain rotating unless a torque is applied to it.

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 you have force without 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.

What happens when net torque not zero?

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.

What happens when no torque is applied to the body?

– If no torque is applied on the body henu the angular momentum of the body and linear momentum will remain conserved. – No external foru is applied on the body therefore the Kinetic energy and Potential energy of the Body remains constant. Hence, option (A), (C), (D) are correct.

How to find total torque acting on a rotating body?

The total torque acting on the body can be found by integrating both sides of the above equation As the body is rigid body angular acceleration (α) of all the elements is the same and it is taken out of integration sign This is an expression for torque acting on a rotating body.

What happens to angular velocity when there is no external torque?

If there is no external torque, the body’s angular momentum will remain constan. However, if there is motion inside the body which changes its rotational inertia (otherwise known as moment of inertia), then its angular velocity will change.

What happens if the net torque is not zero?

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.