Marble experiment (referring to momentum)?

AI Thread Summary
When a marble is struck in a row of stationary marbles, the number of marbles displaced on the opposite side matches the number struck. This phenomenon illustrates the principles of conservation of momentum and energy in physics. The discussion emphasizes that for every marble hit, an equal number is displaced, demonstrating predictable outcomes in momentum transfer. An article linked provides further explanation of this effect. Understanding these principles is essential for grasping fundamental concepts in physics.
sagpod
Messages
1
Reaction score
0
marbles are kept in a row like OOOOOO
when one marble is hit on one side, one marble is displaced from other side ;
when two marbles are hit on one side, two marbles are displaced on the other side;
and same with three and four marbles ...

WHY the same numbers of marbles are displaced as the number of marbles are hit ??
 
Physics news on Phys.org
welcome to pf!

hi sagpod! welcome to pf! :smile:
sagpod said:
WHY the same numbers of marbles are displaced as the number of marbles are hit ??

conservation of momentum and conservation of energy :wink:
 

Thread 'Average velocity as a weighted mean'

Hello everyone, Consider the problem in which a car is told to travel at 30 km/h for L kilometers and then at 60 km/h for another L kilometers. Next, you are asked to determine the average speed. My question is: although we know that the average speed in this case is the harmonic mean of the two speeds, is it also possible to state that the average speed over this 2L-kilometer stretch can be obtained as a weighted average of the two speeds? Best regards, DaTario
View full post »

Thread '1:1 versus 2:1 Mechanical Advantage debate'

The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...
View full post »

Thread 'Newton's first law?'

Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a body is on rest or moves in constant velocity, there is no external force acting on it. But I have heard another form of the law that says the net force acting on a body must be zero. This means there is interactions involved after all. So which one is correct?
View full post »

Similar threads

Power Loss in Transmission Lines: AC vs DC Comparison Explained with a Model
2
Replies
50
Views
12K
Would a Very Large Mass (e.g. the Moon) Fall with g?
Replies
11
Views
2K
Sound waves: why do air molecules oscillate?
Replies
35
Views
5K
B The inverse-square law: Gravitational force on two falling marbles
Replies
23
Views
1K
Equation of motion of a marble moving on a generic vertical guide
Replies
3
Views
2K
Data for a potential and kinetic energy experiment
Replies
6
Views
2K
B When do marbles behave like a liquid in a beaker?
Replies
3
Views
1K
What Is the Probability of Drawing a Specific Marble Color Sequence?
Replies
8
Views
7K
What Causes the Centripetal Acceleration in Circular Motion?
Replies
7
Views
3K
I Relativistic Simultaneity: A Thought Experiment
Replies
7
Views
1K

Hot Threads

Recent Insights

Back
Top