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How much force is needed to accelerate an object twice as fast?
Wiki User
∙ 12y ago
You twice it.
Wiki User
∙ 12y ago
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Examples for 2nd law of motion?
Newton stated that an object will change velocity if you push it or pull it - it accelerates in the direction you push it. If you push it twice as hard, it will accelerate twice as fast (acceleration is directly proportional to force). If the object has twice the mass, it will accelerate half as much (acceleration is inversely proportional to mass)
Why do objects fall at the same rate of acceleration?
There are several ways to look at this; for example:1) If you have an object of 1 kg, it will accelerate at a certain rate. Two separate objects of 1 kg each will also accelerate at the same rate. Now, if you join them, there is no reason why they should suddenly accelerate faster, or slower, just because they are together.2) For an object of 2 kg, there is twice the force acting on it, to pull it down. However, this is compensated by the fact that the object also has twice the inertia, so it takes twice the force to give it a certain acceleration.Earth's gravitational field, near the surface, is about 9.8 meters/second2. This is the same as 9.8 newton/kilograms; that is, each kilogram is subjected to a force of 9.8 newtons.
If you move an object twice as far from a planet how does that change the planets gravitational force on that object?
The mutual force of gravitational attraction between any two masses is proportional; tothe square of the distance between their centers.When an object is moved twice as far from the planet's center, the force between themdecreases to 1/22 = 1/4 of its original magnitude.
Can the sum of the torques on an object be zero while the net force on the object is nonzero?
Yes. Consider an object with no torques acting on it (therefore the sum of the torques is obviously zero) but with a force directed through its center of mass. How about a freely spinning wheel on a shaft? Would have to be in a vacuum. Ok wait, the answer is yes. Consider a horizontal beam attached at one end that is 6 ft long. If a force (x) is applied at the end of it in the downward direction and another force is applied that is twice as powerful (2x) in the upward direction 3 ft from the attached end the net torque is zero but the net force is x in the upward direction.
Does something in space need to be spinning to have gravity?
A spinning object does not create gravity. But it does create centripetal forces (also previously known as centrifugal forces) whereby an object traveling the path of a spinning object is propelled toward the outside wall of the spinning object, due to the force angled to the rotation of the circle counteracting the force of the smaller object traveling tangent to its path. The strength of this force is often measured in "G's". A "G" is equivalent to the force of gravity, ie: 2 "G" is equivalent to twice the force of gravity.
If you double the amount of net force acting on an object you will?
you will make it accelerate twice as much.
The force of gravity on a 4kg object is twice that on a 2kg object Why does the 4kg object not fall with twice the accleration?
The reason that a heavier object does not fall faster even though there is more gravitational force on it is because it has more mass, and more energy is required to accelerate the greater mass. A small mass doesn't need a lot of force on it to accelerate it. It's "light" in weight. But a heavier one needs more force on it to accelerate it equally. Want a heavier object to accelerate the same as a lighter one? Apply more force. Gravity does that. Automatically. Think it through and it will lock in.
Examples for 2nd law of motion?
Newton stated that an object will change velocity if you push it or pull it - it accelerates in the direction you push it. If you push it twice as hard, it will accelerate twice as fast (acceleration is directly proportional to force). If the object has twice the mass, it will accelerate half as much (acceleration is inversely proportional to mass)
Why do objects fall at the same rate of acceleration?
There are several ways to look at this; for example:1) If you have an object of 1 kg, it will accelerate at a certain rate. Two separate objects of 1 kg each will also accelerate at the same rate. Now, if you join them, there is no reason why they should suddenly accelerate faster, or slower, just because they are together.2) For an object of 2 kg, there is twice the force acting on it, to pull it down. However, this is compensated by the fact that the object also has twice the inertia, so it takes twice the force to give it a certain acceleration.Earth's gravitational field, near the surface, is about 9.8 meters/second2. This is the same as 9.8 newton/kilograms; that is, each kilogram is subjected to a force of 9.8 newtons.
Effect of gravity to falling objects?
The heavy and light objects travel at the same rate because there are two competing factors that cancel each other out. The force of gravity is greater on the heavier object than on the lighter object, proportional to the object's mass. This means that an object with twice the mass will be pulled toward the earth with twice the force. On the other hand, the acceleration is proportional to the force divided by the mass. This means that an object that is twice the mass of another object will be accelerated twice as slowly as the lighter object given the same force. So in order for an object with twice the mass to move at the same rate as the lighter object, the heavier object must be submitted to twice the force. And this is exactly what the force of gravity does. For more information on gravity and forces, you might try the Physics section
If mass creates gravity then why does everything accelerate towards the ground at the same speed regardless of its mass?
F = ma, or rearranged, a = F / m. So while an object with twice the mass feels twice the force due to gravity, that turns out to be precisely the amount of force required to keep the acceleration constant when the mass is doubled.
What is force felt by an accelerating object equal to?
the rate of acceleration depends on mass and force , in the equation a= f/m ie halve the mass = twice the acceleration double the force = twice the acceleration
Why was the pulley invented?
to gain mechanical advantage. So you dont need to apply as much force to move something. A pulley halves the ammount of force needed, but you need to pull a rope twice as far to move the object the same distance.
Near the earths surface the amount of mass an object has does not affect it's acceleration due to gravity?
That is correct. Earth's gravity, often expressed as 9.8 meters per second square, can also be expressed as the equivalent 9.8 Newton per meter. That is, an object of twice the mass will feel twice the force of attraction from Earth. However, it will also have twice the inertia - it requires twice the force to give it a certain acceleration.That is correct. Earth's gravity, often expressed as 9.8 meters per second square, can also be expressed as the equivalent 9.8 Newton per meter. That is, an object of twice the mass will feel twice the force of attraction from Earth. However, it will also have twice the inertia - it requires twice the force to give it a certain acceleration.That is correct. Earth's gravity, often expressed as 9.8 meters per second square, can also be expressed as the equivalent 9.8 Newton per meter. That is, an object of twice the mass will feel twice the force of attraction from Earth. However, it will also have twice the inertia - it requires twice the force to give it a certain acceleration.That is correct. Earth's gravity, often expressed as 9.8 meters per second square, can also be expressed as the equivalent 9.8 Newton per meter. That is, an object of twice the mass will feel twice the force of attraction from Earth. However, it will also have twice the inertia - it requires twice the force to give it a certain acceleration.
If you move an object twice as far from a planet how does that change the planets gravitational force on that object?
The mutual force of gravitational attraction between any two masses is proportional; tothe square of the distance between their centers.When an object is moved twice as far from the planet's center, the force between themdecreases to 1/22 = 1/4 of its original magnitude.
Near the Earth's surface the amount of mass an object has does not affect its acceleration due to gravity?
That is correct. Earth's gravity, often expressed as 9.8 meters per second square, can also be expressed as the equivalent 9.8 Newton per meter. That is, an object of twice the mass will feel twice the force of attraction from Earth. However, it will also have twice the inertia - it requires twice the force to give it a certain acceleration.
One object has twice as much mass as another object the first object also has twice as much what?
weight = mass * gravity, so as long as the force of gravity is the same on both, an object with twice the mass will weigh twice as much.
