0
What is the mass of an object that needs a force of 4500 Newtons to accelerate at a rate of 5 ms2?
Wiki User
∙ 8y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
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.
Does an object with more weight repuire more force to accelerate than an object with lighter weight?
It certainly does. That's why you have to push it harder to accelerate it horizontally. But that "more weight" that it has is exactly the more force it needs for vertical acceleration, and that's why all objects fall with the same acceleration.
Relationship between force and motion?
An object will only change its motion if undergoing a force acting upon it. An object does not, necessarily, need a force to act upon it to move; it needs only a force to accelerate (or decelerate!) If dealing with an object at rest, this equation works best to describe how that object can begin to move: F = ma Where F is the force applied, m is the mass of the object, and a is the acceleration. Therefore, if you apply a force of 10 Newtons to a mass of 10 Kilograms constantly, the object will undergo uniform acceleration of 1 m/s^2 -- ie, it will increase its velocity by 1m/s (meter per second) every second. A force does not need to be constantly applied to an object for it to continue to move. If a force of 10 Newtons is applied to an object of mass 10 kilograms for just one second, the object will accelerate to AND THEN REMAIN AT the velocity 1 meter per second. Now, if you're dealing with objects already moving, the equation looks a little different: it's called the impulse equation, and it describes the relationship between forces and objects in the context of a CHANGE OF MOTION (or, specifically, momentum.) It reads as follows: FT = m(Vf - Vo) F and m are the same as above. Essentially, this equation describes the change in motion--starting at "Vo" and ending with "Vf" of an object mass "m" when the force "F" is applied for "T" seconds. That's really all there is to know--for LINEAR motion, which I assume you're referring. If you mean angular motion, that's another ballgame, and one I really don't want to get involved with ;)
What does effort forces mean?
The effort force is the force that is applied to an object that causes it to move. The object reciprocates with a resistance force. If the effort force is greater than the resistance force, the object moves.
What is the term for the force of gravity on an object that needs to be lifted?
This is usually called its weight.
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.
Does an object with more weight repuire more force to accelerate than an object with lighter weight?
It certainly does. That's why you have to push it harder to accelerate it horizontally. But that "more weight" that it has is exactly the more force it needs for vertical acceleration, and that's why all objects fall with the same acceleration.
Relationship between force and motion?
An object will only change its motion if undergoing a force acting upon it. An object does not, necessarily, need a force to act upon it to move; it needs only a force to accelerate (or decelerate!) If dealing with an object at rest, this equation works best to describe how that object can begin to move: F = ma Where F is the force applied, m is the mass of the object, and a is the acceleration. Therefore, if you apply a force of 10 Newtons to a mass of 10 Kilograms constantly, the object will undergo uniform acceleration of 1 m/s^2 -- ie, it will increase its velocity by 1m/s (meter per second) every second. A force does not need to be constantly applied to an object for it to continue to move. If a force of 10 Newtons is applied to an object of mass 10 kilograms for just one second, the object will accelerate to AND THEN REMAIN AT the velocity 1 meter per second. Now, if you're dealing with objects already moving, the equation looks a little different: it's called the impulse equation, and it describes the relationship between forces and objects in the context of a CHANGE OF MOTION (or, specifically, momentum.) It reads as follows: FT = m(Vf - Vo) F and m are the same as above. Essentially, this equation describes the change in motion--starting at "Vo" and ending with "Vf" of an object mass "m" when the force "F" is applied for "T" seconds. That's really all there is to know--for LINEAR motion, which I assume you're referring. If you mean angular motion, that's another ballgame, and one I really don't want to get involved with ;)
Does work done depends on time what you mean is doing a work in 5 minutes needs more work or doing a work in 10 minutes need more work you mean more newtons?
Newtons is used to measure force, NOT work or energy. It is important not to confuse force with energy (or work). Whether you need more force depends on the exact situation. For example: * When pulling an object in a situation where you have to overcome friction between solids, the force is practically independent of the speed. * When pulling an object through a fluid, the force does increase for a greater speed. * When pulling an object at a constant speed upwards (against the pull of gravity), the force required is independent of the speed (ignoring air resistance).
What does effort forces mean?
The effort force is the force that is applied to an object that causes it to move. The object reciprocates with a resistance force. If the effort force is greater than the resistance force, the object moves.
How many newtons of force does a rocket need to take off?
This depends on the weight of the rocket, weight being the mass of the rocket multiplied by earth's gravitational pull. To take off, the rocket needs to exert force larger than the weight, and for a sufficient amount of time to break out of orbit. For instance, if the rocket had a mass of 1kg, it'd exert (1 * 9.8), or 9.8 Newtons of force towards to ground via it's weight (9.8 being the acceleration towards the ground due to gravity). This means that to start to accelerate away from the ground, the rocket would need to exert force higher than 9.8 Newtons. If your hypothetical rocket has a mass of x kg, then it will need to exert a force greater than 9.8x newtons, ignoring air resistance and decaying of the gravitational field.
What is the term for the force of gravity on an object that needs to be lifted?
This is usually called its weight.
How do i calculate tension?
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.
How does height affect force?
Since force equals mass x acceleration (F=MA), the greater the height of a dropped object the more it will accelerate before it hits the ground, so the greater the energy it will hit with. So, more height, more energy. If one wants to stop a certain object with a certain amount of energy in a given time span, one needs more force if the energy level of the object is higher. Another aspect is that force decreases with height (measured from earth): mass is constant, but gravitational constant decreases with distance to earth.
What is the difference between thrust upthrust weight and gravity?
Thrust is the amount of force exerted by an engine on the object resulting in acceleration. force = mass * acceleration directing thrust in a direction so the object travels upward or directly opposing gravity is upthrust. weight is how much an object with mass feels gravity a mass of x on earth will feel y newtons of force that is y=x*9.8 where 9.8m/s is the gravity of earth. the same object on the moon still has x mass but now only produces Y=x*1.62 of downward force so to lift an object off the ground one needs upthrust=mass of object * gravity + acceleration of motion for movement
How much force does a 20000 kilograms rocket develop to accelerate 1 mass divided by speed squared?
In order to work on this question, we need to clean up the units. For acceleration,we'll use the unit "meter per second2".We'll also assume that the mission controllers want the rocket to accelerate upward.(That'll make a difference.)Gravity is already exerting a downward force on the rocket, which would produce adownward acceleration of 9.8 meters per second2 if it were free to move downward.That force is called the "weight" of the rocket, and any downward motion would bedescribed as "falling". (This has often been observed in the US space program.)In order to accelerate it upward at the rate of 1 meter per second2, the enginesmust completely cancel (balance) the downward force of gravity, PLUS add moreupward force.The total force required is enough to produce upward acceleration of 10.8 meters per second2 ...9.8 upward to cancel gravitational acceleration, plus one more to accelerate upward.F = M A = (20,000) (10.8) = 216,000 newtons = about 48,620 pounds of force.
Why are the objects easier to push or pull than others?
An object with a greater mass needs more force. Mass is what gives an object resistance to acceleration. Newton's Third Law: force = mass x acceleration, or acceleration = force / mass.
