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How do you determine the net force on an object?
Decide which direction is positive motion.
Motion is the opposite direction is negative
The forces must in a straight line!!
Add all the forces in straight line acting on the object.
Example
To the right is positive
A 5 N force pushes a 10 Kg object to the right.
A 2 N force pushes the same 10 Kg object to the left.
The 5 N forces is positive and the 2N force is negative
Net force = +5 N - 2 N = + 3 N
To determine the acceleration use Newton's 2nd law of motion
F = Mass * acceleration
+ 3 N = 10 Kg * a
a = 10 Kg ÷ + 3 N
a = +3 ⅓ m/s^2
The positive sign means the object is accelerating to the right!!
If the forces are not linear, you must use vectors, but the net force in any direction is still the sum of the vectors in that direction.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoThe net force on an object is the vector sum of all forces acting on the object. Since force = mass x acceleration, if the object is not accelerating, then the net force is zero. So to measure the net force, you need to observe the acceleration of the object, then multiply by the mass.
Wiki User
∙ 13y agoIf the total group of all forces acting on an object is balanced,
then the net force on the object is zero.
Wiki User
∙ 12y agoNet force divided by mass is equal to acceleration.
Wiki User
∙ 11y agoThe net external force of an object is the sum of all the forces acting on it. It is equal to the objects mass times its acceleration.
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What causes an object slow down or speed up?
an external net force acting on it
What causes an object to slow down or speed-up?
an external net force acting on it
What causes an object to slow down or speed up?
an external net force acting on it
For an object of mass m in free fall on the moon with no air resistance, what net external force acting on the object?
I don't think any external force is in place, considering there is no gravity on the moon.
If a non zero net force acts on an object what does the object do?
-- When the net force on an object is not zero, the object undergoes accelerated motion.-- The magnitude of the acceleration is the ratio of the net force to the object's mass.-- The direction of the acceleration is the same as the direction of the net force.
What is net force on an object at rest?
The net force on an object at rest is 0.
If we are told that an object has a constant velocity what can we say about the force on that object?
you can say that there is no net force on the object; that is, the net force is zero
What hapPens to the net force of the object if it is at rest?
In that case, the net force on the object is zero.
What is newtons first law of motion summarized?
"an object at rest will stay at rest, unless moved by a(n) outside force(net force). an object in motion will stay in motion, unless stopped by an outside force or friction.
What Combination of all of the force acting on an object?
This would be known as the net-force.
What is the definition of resistance to acceleration?
Inertia resists acceleration. Inertia resists a change in the state of motion of a particle or rigid body. For instance, in order for the state of motion of an object to change, there must be a net external force exerting on the object, which is defined as mass times acceleration. Resistance to this net external force would therefore have to resist the object's acceleration, and that is inertia.
2nd law of newton?
The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased. To put it as it is often put: Force equals mass times acceleration (F = ma): the net force on an object is equal to the mass of the object multiplied by its acceleration.
