According to Law of Inertia, an object will remain in its state of motion, either at rest or moving until an external unbalanced force acts on it. So if the object is at rest, some external force (F) has to be applied in order to move that object. Law of Inertia is actually a second law, out of three Newton's laws of motion.
If an object is not moving or if it is moving with a constant velocity (meaning there is no acceleration), the sum of the forces acting on it is equal to zero. A stationary object is said to be in static translational equilibrium, while an object with a constant velocity is said to be in dynamic translational equilibrium. Typically, an object at rest on the ground has two forces acting on it: Gravity and the Normal force of the ground. Normal force counters gravity and prevents things from falling through the ground.
Yes. The fact that the object is not moving does not mean that there is absolutely no force acting on it. It only means that: (A) there is no force acting on it or (B) there is no net force acting on it.
Often a friction force counteracts whatever other forces are applied to an object, resulting in a net force of zero -- so the object remains motionless -- as long as those other forces are not applying enough force to move the object.
Yes.
Yes. If the sum of the forces is zero, then the object will not accelerate - meaning it will maintain its speed.
A force can make a still object move. It can change its shape or size. It can change the way in which it is moving.
If there are any forces acting on a stationary object, then they must be balanced, or it would no longer remain stationary.It is also possible that the object is already moving. In the forces are balanced on a moving object, the object would continue moving at the same speed and direction (velocity) that it already had.
If five different forces are acting upon an object, it is still possible for the net force on the object to be zero. One configuration is forces acting in the form of a regular pentagon, the components of each cancelling each other out
If there is no net force acting on an object then the movement of the object doesn't change. If it is sitting still, then it remains sitting still. If it is moving, then it continues moving at the same speed in the same direction.
Yes, the object can have equal forces acting in opposite directions: 5N ->[]<- 5N The object will have forces acting upon it, but will not move.
An object with balanced forces acting on it is still. An object with unbalanced forces acting on them moves at an non constant velocity. It is possible for an object to have balanced forces acting on it and yet move in a vacuum.
Yes.
When two objects meet in motion, there is generally more force created compared to when one object is still. This is because when both objects are in motion, they have momentum which adds to the force of the collision. When one object is still, there is only the force of the moving object acting upon the still object.
There are truly thousands of forces acting upon one object at any one time, every object in the universe in some way will affect it. The main forces would gravity and friction and air resistance and thrust depending on the situation.
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.
Yes. If the sum of the forces is zero, then the object will not accelerate - meaning it will maintain its speed.
A force can make a still object move. It can change its shape or size. It can change the way in which it is moving.
If there are any forces acting on a stationary object, then they must be balanced, or it would no longer remain stationary.It is also possible that the object is already moving. In the forces are balanced on a moving object, the object would continue moving at the same speed and direction (velocity) that it already had.
If an object with wheels (or a round object) is on a level grade, and there is no force acting on it, it will not move.
If an object is at rest 2 forces are still acting on it (if done on a planet) gravity pushing the object down. And the up force which is the force exerted by ground upwards against the object. Gravity being the greater force keeps the object on the ground, but the upforce prevents the object from basically ploughing through the ground.