what is a "Newton Force" unit?

Question

When ever I study or listen this unit i.e we need 500 newton force to accelerate the car, or the engine produced 300 newton force etc etc. I can not get the concept as I get from these sentences:
1. The door is 1 meter away from me.
2. He picked up 80 kg weight.
When I some one said the door is 1 meter away, at once, my brain got it that how much the door is away from me.
Similarly when some one said that some one piked up 80 kg weight I , at once, got that this is so much heavy weight which is lifted.
but 50 newton force, 100 newton force, I can not get it what actually this mean?
Can some one explain the concept of newton force in detail plus example?

Answer 1

Force - a force applied to a free mass causes it to accelerate



Acceleration is the increase in velocity of a mass.



A Newton unit of Force - 1 Newton causes a mass of 1 Kg to accelerate at a rate of 1 m/s/s



I simple terms 1 Newton will make a 1 Kg mass accelerate from 0 to 1m/s in 1 second



I hope this helps, it sounds like you haven't got to this really!

Answer 2

Essentially force, all force, is just a push or a pull. And a Newton is an arcane unit of force. It is equivalent to the units kg.m/s^2 in the kms SI units. kg is kilograms of mass, m is meters of length, and s is seconds of time; thus kms.



So 1 Newton ~ 1 kg.m/s^2. Note that kg.m/s^2 are the units for force F = MA, Newton's second law of motion. M is the mass (kg) and A is the acceleration (m/s^2).



When you write "80 kg weight" that is incorrect. kg is a measure of mass, not weight, which is a push or pull, a force. Mass is a measure of inertia. So a big mass M has more inertia than a smaller mass m < M. Mass does not vary from place to place, like a different planet. Weight does in general change as the mass is moved about because weight also depends on the gravity field strength g = GM/r^2.



That is the weight, the force of gravity, is found by multiplying mass M by the strength of the gravity field, g. So W = Mg is the weight of a mass M in a gravity field g. If g ~ 10 m/s^2, your 500 Newton force has a mass of M = W/g = 500/10 = 50 kg for example. And your 80 kg mass (not weight) weighs W = Mg = 80*10 = 800 Newtons (or kg.m/s^2).



And that's the difference between weight and mass, between force and mass. Weight and force are found by multiplying the mass M by the field g or the acceleration A.

Answer 3

F = ma



This is one of Newton's Laws, it represents force as proportional to the mass of the object and the acceleration at which it is undergoing. So here on Earth, you can actually weigh yourself using this. Say you have a 50kg mass, and you are standing on Earth. You can calculate your weight (yes, weight) with just this information.



F = ma

F = 50kg(9.81m/s^2) = 490.5N



We set a equal to the acceleration we are currently experiencing. The earth is accelerating us at about 9.81m/s^2.



That N is the newton force. Some people compare the weight of an apple to about 1N, just to give you a rough estimate. In fact, just take any 100g object and hold it, that has a weight of about 1N. Just to recap, weight and force are the same thing represented in different ways.



Sorry if my wording or anything is hard to follow, it's really late and I'm just now going to bed.