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Newton's Cradle apply the Newton's 3rd Law. "For every action, there's an equal but opposite reaction" is the Newton's 3rd law. The action when the ball falls and strikes the others, the reaction is the ball on the other end of the cradle moving.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoJust to clarify, this does not sound like it is a question to be "solved" mathematically (it would be extraordinarily complicated), but rather just given some critical thought so that the more principally asserted physical relationships manifest in an everyday situation can be explored. It is a "thought experiment."
A bird flies by flapping its wings - simple enough. If we are to represent a bird's (considerably lightweight) body in a free body diagram, we see that it is burdened by the same silly gravity that encumbers even the cleverest of airborne fowl.
We know from Newton's second Law (ΣF = ma, in case you forgot) that in order to accelerate upward, an object must experience a net upward force. Well, we've already mentioned one force present... gravity: arch-nemesis of Wile E. Cyote - it acts to pull the bird DOWNWARD. So we have to conclude that, since the bird does SOMEHOW manage to fly, it must SOMEHOW manage to produce an upward force great enough to overcome the force of gravity. Let's discuss where this force comes from.
A bird orients its wings so that they are parallel to the ground and flaps; in effect he (I've decided it's a "he") pushes downward on the air beneath its wings. Newton's third states that the air will push back. It does! It also states that the reaction force will be in the opposite direction (you may have also heard that it should be "equal" in addition to "opposite" - turns out that's only when there is only one reaction force AND the system is in equilibrium). This means that the air pushes upwards on his wings (since he pushed downwards on the air) and he generates lift!
But what about when he raises his wing again? Doesn't the same thing happen in the opposite direction? It would, but the bird (cleverly) rotates his wing so that it is angled, less parallel to the ground. Now the reaction force the air exerts on the wing as it moves back upwards is only partially acting downwards - it also has a component pushing him horizontally, and that doesn't hinder his ability to get off the ground.
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A glass sitting on a table will not move unless moved by a force This example demonstrates what?
newtons third law of motion
What is newtons Third law of motion is also known as action?
action
Which kind of newtons law of motion is demonstrated by a hammer pounding a nail into a board?
Pounding a nail into a board with a hammer in terms of matter energy and force is best described by inertia force.
Which wave is formed when a bullet fired from a gun?
=it is newtons third law of motion which states=="for every action there is an equal and opposite reaction"==when a gun is fired the bullet moves in the forward direction which is action whereas the gun recoils in the backward direction which is the reaction......................=
Newton's laws of motion static and dynamic?
Newton's first law of motion: every body continues in its state of rest or uniform speed, unless an unbalanced external force acts on it. Newton's second law of motion: force applied is directy proportional to the rate of change of momentum. Newton's third law of motion: to every action there is an equal and opposite reaction
What is newtons third motion?
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What is theExplanation of newtons third of motion?
Newtons thrid law of motion is that every action has an opposite and equal reaction acting upon it
What is newtons third law of motion called?
Newton's third law of motion is that for every action there is an equal and opposite reaction. This law is also called reciprocal motion/force or "action-reaction."
Does football involve using Newtons Third Law of Motion?
no
A glass sitting on a table will not move unless moved by a force This example demonstrates what?
newtons third law of motion
Newtons third law of motion is also known as action?
reaction
What do seat belts in cars have to do with newtons third law of motion?
penis
Which of Newtons laws states that for every force there is an equal force in the opposite direction?
That's Newton's third law of motion. A link can be found below.
What is the equivalent of a black hole using newtons third law of motion?
nothing
Does isaac newtons third law of motion affect a fifth grader?
yes
How are action and reaction forces realeted from newtons third law of motion?
Equally.
What is newtons Third law of motion is also known as action?
action
