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How is it possible to apply force to something but do no work?
Work is calculated as force multiplied by the distance the force is applied over. If the force is applied but the object does not move, no work is done because there is no displacement. So, it is possible to apply force without doing work if there is no movement of the object.
When you apply a tiny force to a tiny object or a large force to a large object you produce?
When you apply a force to a mass you produce acceleration. "Tiny" and "large" are not well defined here, but the basic equation is F = ma, so if the forces are proportional to the masses in each case (for example, a 0.1 N force applied to a 0.1 g object and a 1000 N force applied to a 1000 g object) then you will produce the same acceleration for both objects.
When applying a force to make an object move forward why is it important to push from a point where the force is aimed at the center of mass?
If one is trying to translate (move without making it spin/vibrate) an object, aiming the force at the object's center of mass optimizes the amount that the object moves per unit of force applied. This is because, as the force moves away from the center of mass, some of the force will cause the object to spin. If the only interest is to make the object move in some direction, causing spin is a waste of force. In order to envision this, it may be useful to imagine a pepper shaker on a table. If a force is applied directly to its center of mass, it will slide along the table. However, if a force is applied to close to the bottom or the top of it, it will tip over. It is worth noting that this is only true for objects that slide across what they're sitting on. For example, when making a snow man, one should push a snowball above the center of mass so that it may roll and accumulate snow.
When you apply force and move an object what happens?
The quick answer is that you are overcoming inertia, which is the amount of force needed to cause an object to move from rest. When a force is applied to an object work is being done on it. Work is the transfer of energy from object to another. So when you apply force and move the object, you are transferring energy to that object. For the object to move it must overcome several forces, the main of these being friction which is a combination of gravity and surfaces particles rubbing against one another. The others are usually going to be mostly neglegable or non applicable and include wind resistance, magnetic forces, outside gravitational forces, and so on. In addition to that, force will be exerted back on you. Newton's Third Law of Motion: For every action there is an equal and opposite reaction. When you apply force and move an object it exerts force back on you equal to the force you are applying. If you have enough mass and friction with the surface you are on top of, you should remain stationary. If you don't have enough mass and friction, then will be moved by the object in the opposite direction that you are pushing the object. A way to imagine this is by thinking of pushing a heavy object on a wooden floor with sneakers on. Then imagine doing the same thing but with socks on and the wooden floor has just been polished so is very slippery. In the first scenario, given that you are strong and heavy enough, you will move the object forward. In the second scenario, the object will move you backward.
Why does it take more force to accelerate a more massive object?
A force will not increase or decrease an acceleration. If the force is constant, it will cause a constant acceleration. It may increase or decrease the speed. The change of velocity - for the same force - is the same, whether the speed is increasing, decreasing, or just changing direction.
How does force affect the motion and speed of an object?
As Newton's laws state, the greater the force, the more an object will accelerate or slow down. The force in the opposite direction of motion is called friction. So if you have a 3Kg block travelling at 2m/s, with a friction of 1m/s you will need at least 5N to keep it going. The more force you apply, the faster the block will travel, so it accelerates. The less force you apply the more it slows down and eventually stops because the friction is greater than the force applied. An object that travels in a uniform direction at a uniform speed (Newtons 1st law) will continue traveling in the same way and in the same direction (inertia) unless acted upon by a resultant force (friction).
How to prove that normal force is equal to the product of mass and gravity?
The normal force is what prevents an object from falling through the ground. The force of gravity is equal to the product of the mass and acceleration due to gravity, so the ground that the object sits on must apply an equal force in the opposite direction (Newton's Third Law), other wise the object would fall through.
Is energy the capacity to apply a push or pull to an object?
Energy is the ability to do work or produce a change in an object or system. It is not a physical force like a push or pull, but rather a property that allows objects to undergo transformations or move.
Do all planets spin?
Absolutely. Spin creates centrifugal force, which actually works against gravity. When a object on a planet spins with the planet, the spin of the planet is constantly trying to fling said object off into space, where as gravity is constantly forcing the object toward the spinning body. If the spin became so great that it overcame the gravitational pull, the object would be flung into space. While spin does not actually affect the gravity of an object, it can reduce the amount of gravity an object on the surface experiences.
When the buoyant force on a submerged object is more than the weight of the object?
The net force on the object is upward, so the object accelerates upward in the fluid.
How is the motion of an object affected when a force act on it?
When a force acts on an object, it can cause the object to speed up, slow down, or change direction, depending on the direction and magnitude of the force relative to the object's initial motion. This change in motion is described by Newton's second law of motion, which states that the acceleration of an object is directly proportional to the force acting on it and inversely proportional to its mass.
How do force and energy relate?
Force and energy relate in multiple ways; first, energy must be used to apply force. Though, they do have their differences; force is applied to result in movement of some sort, and energy has many different states.
