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When there is no external force acting on a body , which physical quantity is conserved?
Force and laws of Motion
Sam Amlock
Angular Momentum. The conserved quantity we are investigating is called angular momentum. The symbol for angular momentum is the letter L. Just as linear momentum is conserved when there is no net external forces, angular momentum is constant or conserved when the net torque is zero.
Ahmad Grant
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If you topple from your treehouse you'll continuously gain momentum as you fall to the ground below doesn' t this violate the law of conservation of momentum?
"Momentum is conserved if no net external force acts.If you consider just the falling object (you that is), there is an external force acting on it - gravity. So there is no violation of conservation of momentum here.On the other hand, if you consider the falling you and the earth as two interacting objects, then there is no net external force, just the internal gravitational forces acting between you and the earth. So you and the earth gain equal but opposite amounts of momentum, and momentum is conserved."http://intranet.emmawillard.org/Science/physicscqanswers.html
What is Principle of conservation of linear momentum?
That means that there is a quantity, called momentum, that is conserved. Momentum is defined as the product of mass times velocity. If you add (product x velocity) for several items, or particles, before and after a collission for example, the total you get will not change. Note that, since velocity is a vector quantity, so is momentum, so if your items move in more than one dimension, you have to use vector addition.
What is a quantity that measures the effects of a force acting over a distance?
it is complicated
Is work done a scalar or a vector quantity?
Work done is the amount of energy transferred by a force acting through a distance. It is a scalar quantity.
What causes an object to slow down or speed up?
an external net force acting on it
If you topple from your treehouse you'll continuously gain momentum as you fall to the ground below doesn' t this violate the law of conservation of momentum?
"Momentum is conserved if no net external force acts.If you consider just the falling object (you that is), there is an external force acting on it - gravity. So there is no violation of conservation of momentum here.On the other hand, if you consider the falling you and the earth as two interacting objects, then there is no net external force, just the internal gravitational forces acting between you and the earth. So you and the earth gain equal but opposite amounts of momentum, and momentum is conserved."http://intranet.emmawillard.org/Science/physicscqanswers.html
What is Principle of conservation of linear momentum?
That means that there is a quantity, called momentum, that is conserved. Momentum is defined as the product of mass times velocity. If you add (product x velocity) for several items, or particles, before and after a collission for example, the total you get will not change. Note that, since velocity is a vector quantity, so is momentum, so if your items move in more than one dimension, you have to use vector addition.
What is a quantity that measures the effects of a force acting over a distance?
it is complicated
What is a quantity the measures effects of a force acting over a distance?
it is complicated
Is work done a scalar or a vector quantity?
Work done is the amount of energy transferred by a force acting through a distance. It is a scalar quantity.
What happens to a system when there are no external forces acting on it?
There will be no action. everything remains still.
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
Is force a scaler or vector quantity?
Force is a vector quantity. When my brother and I were both little guys, I could pull on the toy with a million tons of force toward me, and he could pull on the same toy with a million tons of force toward him, and the toy didn't move, because the vector sum of the external forces acting on it was zero. You could not do that today, as they no longer build toys like they used to.
What does physical gestures mean?
In Drama Physical Gestures mean how you/someone thinks you do your acting (moves)
What is d'alembert's principle?
the principle that resultant of the external forces and kinetic reaction acting forces is zero
