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If an unbalanced force was not acting upon it, it wouldn't be moving in a circle.
An object with no unbalanced force will either not be moving, or be moving in a straight line due to Isaac Newtons 1st law of motion.

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Q: Why there must be an unbalanced force acting if an object is moving in a circle at constant speed?
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Related questions

Do balanced or unbalanced forces cause a moving object to continue moving at a constant speed?

unbalanced


Is a car balanced or unbalanced when turninng while moving at a constant speed?

The forces acting on the car are unbalanced because it is accelerating by changing direction, even though it has constant speed. Unbalanced forces cause acceleration (change in motion). That is what Newton's first law of motion is about.


What will happen to an object moving at constant velocity?

Such an object is traveling at a constant speed in a straight line. Nothing will happen to it until the forces acting on it become unbalanced, or it runs into something.


Infer whether balanced forces must be acting on a car moving at a constant speed?

The friction force acting upon the turned wheels of the car cause an unbalanced force upon the car and a subsequent acceleration.


How do you kniw uf an ibject has unbalanced forces acting on it?

If it is moving.


What happens when there are unbalanced forces acting on an object that is not moving?

it will lost its balance and crash


Are there unbalanced or balanced forces on the moon?

Must be unbalanced. Otherwise, the moon would be moving at constant speed in a straight line.


How does an unbalanced force affect a moving object at a constant velocity?

If the group of forces on an object is unbalanced, then the object can't have constant velocity. Its speed or the direction of its motion must change.


How can you tell if a force is balanced or unbalanced by looking at it?

2 Forces are unbalanced when an object that is not moving starts moving or changes speed or direction. Balanced forces are the opposite they are where an object that is not moving stays still or an object that is moving stays at a constant pace.


How do balanced and unbalanced forces work when you sit down?

While you're moving, the forces acting on you are unbalanced, and add up to something. When you're sitting, the forces acting on you are balanced, and add up to zero.


Does an object always move in the direction of the unbalanced force exerted on it by another object?

Not always, the unbalanced force only points in the direction of the acceleration so a body may be moving in the opposite direction. Example. A car moves with some speed to the right on a horizontal surface and lock the brakes, if the surface has friction, but the net force acting on it is equal to the frictional force pointing left and produces a Deceleration of carriage until stop, but while this happens continuously in motion to the right.


If an object is moving in a circle with a constant speed Its acceleration is constant in what?

It is constant in magnitude. It is changing in direction.