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Before you let it go, the weight you feel in your hand is the force. After falling a long way, the increasing resistance due to the air finally balances the force. So there are now 2 forces, gravity + air resistance, with a total of zero. So there are forces, but they add up to nothing, and hence constant speed. When you hold it in your hand, the speed is also constant, zero, the force provided by you balances gravity. Acceleration is a sign of unbalanced force. Constant velocity is a sign of balanced force. This led to the idea by Monsieur d'Alembert, that in any situation involving forces and accelerations, in your Force Vector Diagram you can add a further component equal to the negative of (Mass x Acceleration) and then solve the problem as a problem of statics ("d'Alembert's Principle). Thus for a falling object in a vacuum (no air resistance) you have weight force F downwards, and mass times acceleration g UPwards, so as a "statics" problem, F=mg.
What else can I help you with?
What is the net force acting on a falling object when it reaches terminal velocity?
An object falling at terminal velocity is moving at constant speed (that's what terminal velocity means) and we will assume it is not changing direction (i.e. it is falling straight down; in reality it is more likely to be bobbing and weaving on the wind.) Constant speed and direction is another way of saying constant velocity. when an object is acted upon by a net force, it's velocity changes. So, since we know that the velocity is not changing, there is no force.
What happens to a moving object if no other force acts on it?
The law of ineritia dictates that it will keep on going its course if no force acts upon it. Of course this is only vaild in a static frame of reference, if the observer is accelerating at the same time then the object even know nothing is acting upon it will according to the observer accelerate without an apparent force acting on it. But to sum up in layman's term no it won't do anything.
How do you find out if a force is balanced or unbalanced?
Its easy....To balance force you need to apply an equivalent force in the opposite direction....Example:If a force of 20N acts on a body along the North, you should apply 20N along the south......simple.......
Is power of the object moving with constant force and velocity can be meaured?
Please slow down. A few points need to be clarified here: -- There's no such thing as "moving with constant force". -- If the object exerts a force on something else, or a constant force acts on the object, then the object can't move with constant velocity. It must accelerate. -- A moving object has energy, but it doesn't have 'power'. Power is the rate at which energy is moving, or changing, or being used. If the object is moving with constant velocity, then its energy is not changing. -- If its energy is changing, then its velocity, or position, or temperature is changing. Either the object is transferring energy to something else (like brakes), or something else is transferring energy to the object (like an engine). Either way, the rate at which power is exchanging between the object and something else is the power. But there's no such thing as "power of the object". Now, what was it you were saying ? The energy of the object can be calculated, if we either know or measure its mass, electric charge, altitude, speed, temperature, etc.
According to Newton's First Law we know that if an object at rest begins to move what must have happened?
If an object at rest begins to move, an external force must have been applied to overcome its inertia, as per Newton's First Law of motion. The object will continue to move with a constant velocity unless acted upon by another force due to the law of inertia.
What is the only force acting on a falling object is gravity?
I don't know really but i think it is just SCIENCE
How do you know that force are balanced when static friction acts on an object?
The other force being applied, opposing to the object's static friction would both be equal therefore the forces are balancing.
What is the net force acting on a falling object when it reaches terminal velocity?
An object falling at terminal velocity is moving at constant speed (that's what terminal velocity means) and we will assume it is not changing direction (i.e. it is falling straight down; in reality it is more likely to be bobbing and weaving on the wind.) Constant speed and direction is another way of saying constant velocity. when an object is acted upon by a net force, it's velocity changes. So, since we know that the velocity is not changing, there is no force.
What is the net force on a falling object when it reaches terminal velocity?
An object falling at terminal velocity is moving at constant speed (that's what terminal velocity means) and we will assume it is not changing direction (i.e. it is falling straight down; in reality it is more likely to be bobbing and weaving on the wind.) Constant speed and direction is another way of saying constant velocity. when an object is acted upon by a net force, it's velocity changes. So, since we know that the velocity is not changing, there is no force.
How is the force of a falling object calculated?
"Force" is a technical term in physics and is almost certainly not what you want to know if you're talking about a falling object. You probably want the energy instead, which is force x distance. You can measure the force directly using a scale (weight is force, but be careful if you have a metric scale; they almost always report mass, not force. To get force in newtons, multiply the mass in kilograms by 9.8 meters per second per second). Energy has units like newton-meters (joules) or foot-pounds.
What is the net force acting on a 25N freely falling object. What is the net force when the object encounters 15 N of air resistance. When it falls fast enough to encounter 25 N of air resistance?
You call it a "25N object". Where did it get that label ? It must be because when it's down on land, not freely falling, and you put it on a bathroom scale, the scale reads "25N". When you see that, you know that the mutual forces of gravity in both directions between the object and the Earth are both 25N, and for convenience, you begin to refer to that object as a "25N object". As long as the distance between the object and the center of the Earth remains pretty much the same, so does the gravitational force between them. With that knowledge, we can go on and answer your question. First, the "freely falling" bit. An object plowing through air is not freely falling, because it has to keep pushing air molecules out of its way. Since you call the object a "freely falling" one, we know that there is no air in its path, and there are no springs, weights, bungee cords, people, or rays of mysterious radiation exerting other forces on it. It's just freely falling, somewhere near the surface of the Earth. And since the only force on it is the force of gravity, the magnitude of the force is that old 25N again, acting in the direction that we call "down".
An object that weighs 340 N floats on a lake what is the weight of the displaced water?
buoyant force acts on the object from its bottom and push it outside..the magnitude of the buoyant force acting on the object will b equal to the weight of displaced water..
What are the similarities in motion of a free-falling object and an object that is projected horizontally?
Both a free-falling object and an object projected horizontally experience only the force of gravity acting on them. They both follow a parabolic path due to gravity, with the horizontal motion of the projected object not affecting the vertical motion caused by gravity.
What happens to a moving object if no other force acts on it?
The law of ineritia dictates that it will keep on going its course if no force acts upon it. Of course this is only vaild in a static frame of reference, if the observer is accelerating at the same time then the object even know nothing is acting upon it will according to the observer accelerate without an apparent force acting on it. But to sum up in layman's term no it won't do anything.
How can you know when an object has an unbalaced force on it?
You can know when an object has an unbalanced force acting on it if the object is accelerating or changing its speed and/or direction. This is due to Newton's Second Law of Motion, which states that an unbalanced force will cause an object to accelerate.
What is tangentically force?
It seems there may be a misunderstanding or typo in the term "tangentically force." If you meant "tangential force," it is a force that acts perpendicular to the direction of an object's motion, causing it to change direction without affecting its speed. Let me know if you meant something different.
What forces act on a stationary object question mark I know there's weight reaction force and a minute amount of friction but hasn't there got to be a force that opposes friction?
Actually, don't worry I know the answer to this particular question now. There is friction, weight (mxg) and reaction force. Movement opposes friction, but that isn't taking place when an object is stationary.
