All Questions
Tagged with collision newtonian-mechanics
1,014
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Conservation of linear vs. angular momentum in two similar cases
I have a question that eludes my understanding:
Imagine we have a bullet of mass $m$ and a rigid pendulum with a bob of mass $M$ hanging from a rigid rod of negligible mass hanging from the ceiling ...
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The total horizontal distance traveled by a bouncing ball nudged off a table of height $H$ [closed]
Suppose a ball gently rolls off a flat surface of height $H$ and free falls to the ground subject only to the law of gravity. Once the ball hits the ground, it rebounds as shown in the figure. When ...
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Idealized Newton's cradle
I was wondering about the conditions for an ideal newtons cradle.
Under regular circumstances, the collisions are inelastic and a newton's cradle dissipates energy in various forms like heat, friction,...
-1
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2
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For an objective falling, reaching terminal velocity and then hitting the ground, how can I find the force it exerts on the ground? [closed]
For example object with v=tanh(0.1213)t/0.01236. m=69kg.
I thought I had to use F=mv/t but that just gives the net force of the object while falling.
I don't know how to find the force impacting on ...
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5
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Direction of impulse
My textbook has the following problem:
A batsman deflects a ball by an angle of 45° without changing the initial speed which is equal to 54 km/h. What is the impulse imparted to the ball? (Mass of ...
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Extra force in other frame paradox
Suppose there are two balls: one steel ball that cannot break with a mass of 10 kg, and another smaller wooden ball with a mass of 1 kg, which will break if a force of 10 N is applied to it.
Consider ...
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Why do objects slow down when they hit the ground? [closed]
Say you drop an object on the ground. For the purpose of this question, I am just focusing on the slowing down of the object, not if it rebounds. I was just wondering which of the two reasons explains ...
- 539
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Do bodies stick together after an inelastic oblique collision?
My question is particularly about an oblique collision case. (For example a body having velocity along x axis approaching another with velocity along y axis) From what I know, in perfectly inelastic ...
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Will the expression be same for $n$th and $(n+1)$th Coefficient of restitution?
Let's say a ball is dropped from the height h on the ground and bounces repeatedly. If the coefficient of restitution is e, the height to which the ball goes up after it rebounds for the $nth$ time is ...
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When two objects collide, which directions do they go in after the collision?
I am watching this video here:
https://www.youtube.com/watch?v=KPhMMnIocR0&list=PL4VRaRxeNj-1F-JukcRVAzbiIi0ibrHqy.
At 11:02, the author shows a simulation and says that for a Galton Board (https:...
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After how many bounces will a ball's mechanical energy equal zero?
This was a question I asked myself for fun. It turned out to be more difficult than I initially imagined.
The Problem: Let's say a ball is dropped from h0. Air friction is negligible. The collisions ...
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2
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85
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Why do basketballs with more air in them bounce more than ones with less air?
I thought it this because more air means more pressure, so there will be more pressure when the ball is deformed and it will gain more kinetic energy as it rebounds. However, some sources say that ...
- 539
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Loss in KE in terms of reduced mass and coefficient of restitution
(This is very similar to this question - except I have derived the equation and am now looking for a simpler way.)
The Equation
The change in the systems overall KE after a collision between two ...
6
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3
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Conservation of momentum in Newton's cradle
Imagine a Newton's cradle with 5 balls with mass of each ball is $m$. In a case where two balls are dropped against three balls, if we write an equation considering that momentum is conserved,
$$ 2mu=...
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2
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542
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According to Newton's Third Law why is there a difference in movements between collisions of different mass (please read description)?
When an object of some mass hits and rolls towards another stationary object of the same mass, the ball that was rolling stops. However, if we use the same ball from that scenario, and roll it at the ...
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