If an object is falling, and the gravitational force is the same as the air resistance
acting against the object it is called terminal speed, the object does not speed up,
nor slow down
A balanced group of forces has the same effect on an object as no force at all.
If the net force on an object is zero, we can say that the forces are balanced, or that they are in equilibrium(which really means the same thing). There may be forces acting on the object, but there is an equal and opposite force pushing or pulling in the opposite direction, and all the forces balance out. Alternatively, there may be no forces acting on the object at all.
If the object doesn't accelerate, then the forces are balanced - meaning that the vector sum of forces is equal to zero. If the object does accelerate, then the forces are unbalanced - the sum of all forces is not equal to zero.What the force are really varies from case to case. In general, there usually is at least the gravitational force acting on an object, and if the object doesn't accelerate, that means there must be at least one other force acting on the object. Here are two examples:A book resting on a horizontal table. Gravity pulls it down. The table pushes the book up.Some object resting on an inclined surface. In this case, the forces to counteract gravity are a combination of gravity and friction forces.
Not much, really. If the object's direction is changing, then the velocity changes, and there are forces acting on it. The only thing we can say is that the net force acting on the object is either zero, or it is perpendicular to the movement.If the VELOCITY doesn't change, then the net force (the sum of the forces) is zero.
A balanced force is when two equal forces are applied on an object pushing both ways. Also they are equal forces acting on an object in opposite directions.When something isn't moving the forces are balanced, eg. Gravity pulls a table down but that table is pushed up by the floor or the ground it stands on so doesn't move.An UNbalanced force is needed for something to change movement or change direction, eg. a seesaw moving up and down because the forces aren't equal.A balanced force is a force equally opposed by another force in the opposite direction, meaning that they cancel out each other so the object does not move, unlike an unbalanced force, where the object will move because one force over powers the other.When something isn't moving the forces are balanced, eg. Gravity pulls a table down but that table is pushed up by the floor or the ground it stands on so doesn't move.An UNbalanced force is needed for something to change movement or change direction, eg. a seesaw moving up and down because the forces aren't equal.Unlike balanced forces, we say unbalanced forces when two forces acting on an object are not equal in size.When a number of forces act on a body simultaneously and the resultant of these forces is zero, then the forces are said to be balanced.Moment=distance from pivot to source of force x forceNm= m x NMoments on either side of an object must be equal for the object to balance.e.g on a see-saw someone who weighs 1000N sits 1m from the pivot, and someone who weighs 2000N sits 0.5m from the pivot on the other side of the see-saw will balance as in this situation, on both sides of the see- saw Nm=1000A balanced force is where forces on opposite sides of the object are the same net force (for example, 15 N and -15 N) which makes for the object being at rest. Balanced net force on an object makes for the object ALWAYS being at rest. Also it has to be even on both sides to be a balanced force -Keyaira PennieBalanced forces do not cause a change in motion. They are equal in size and opposite in direction.
Yes, there are always forces acting upon things, even when at rest (although all motion is relative so nothing is really "at rest"). There are some that are visible to the naked eye. For example, wind and corrosion. There are also forces that are not visible to the naked eye. Like the forces that make the electrons spin around the nucleus, the forces that hold the object together, etc....
I really need help on it!! Can someone help me?
If a crate placed on an inclined plane is moving at constant velocity or not moving at all -- which is really a special case of constant velocity where the velocity is zero -- then the sum of the forces acting upon it is zero. We can say that it is in a state of equilibrium, where all forces acting upon it are in perfect balance and cancel themselves out. A free-body diagram is often used to represent a body and the forces acting upon it and helps us visualize the relationship of the vector forces. See this link: http://en.wikipedia.org/wiki/Free-body_diagram#Example
an example can be anything that's not moving like a skateboard, a bike a soccer ball, and a lot more. hope this helps
It really depends what information you are given. Quite often, you can use the fact that for an object to remain static (which implies it doesn't accelerate), the sum of forces on the object must needs be zero.
It's not a question of "how many" but of "how strong". In order for an object to speed up or slow down... ∑F > µY Where ∑F = the summation of forces (add up all of the forces acting on an object, with opposite directions being opposite signs--ie, left is negative, right is positive for force strength) = "pulls" (+) added to your "pushes" (-) and µ = the coefficient of friction = the force retarding the movement of your object and Y = the component of the force with which gravity is pulling down on your object that is perpendicular to the plane on which it rests. IN OTHER WORDS, On a flat surface, an object will only move if, when you add up all of the "pulls" (positive numbers) with the "pushes" (negative numbers) you reach a number larger than the force of friction acting on the object from just sitting still. The force of friction is literally just a fraction of the object's weight, in the case of a flat surface (not on an incline.) For that reason, you can put a lot of pushes and a lot of pulls on a really heavy object before it moves. Additionally, if you push and pull with the same force, regardless the friction on the object, the object will not move, because the forces cancel each other out and friction becomes irrelevant. Helpful?
No, that is false. "Free fall" means that the only force acting on an object is GRAVITY. Specifically, there may be no significant amount of air resistance. It's not quite possible for the only force acting on an object to be air resistance, since you can't really eliminate the effect of gravity. Though, if the object has the same density than the liquid or gas in which it is placed, the gravity may be cancelled for practical purposes.
I don't know really but i think it is just SCIENCE