Launching marble upwards - Find speed

  • Thread starter Thread starter lachlan81
  • Start date Start date
  • Tags Tags
    Marble Speed
AI Thread Summary
To find the speed of the marble when launched, conservation of energy principles indicate that the initial kinetic energy equals the gravitational potential energy at maximum height. The maximum height of 40m translates to a potential energy of 3920 Joules, leading to an initial speed of approximately 28 m/s. At the halfway point, 20m, the marble has both kinetic and potential energy, allowing for a calculation of its speed using energy conservation. The potential energy at 20m is 1960 Joules, resulting in a speed of about 20 m/s at that height. Understanding these energy transformations is key to solving the problem effectively.
lachlan81
Messages
2
Reaction score
0
I cannot work out how to get this question answered.

Question:
A student launches a marble vertically upwards so that it reaches a maximum height of 40m above it's release height. Calculate:

a).The speed of the marble when it is launched.
b). The speed of the marble at the halfway point.:confused:
 
Physics news on Phys.org
Try with conservation of energy. What sort of energy does the marble have the instant it is launched? How about the instant it reaches its maximum height?
 
Ok, thanks for your help.:smile:
 
Thread 'Struggling to make relation between elastic force and height'

Thread 'Struggling to make relation between elastic force and height'

Hello guys this is what I tried so far. I used the UTS to calculate the force it needs when the rope tears. My idea was to make a relationship/ function that would give me the force depending on height. Yeah i couldnt find a way to solve it. I also thought about how I could use hooks law (how it was given to me in my script) with the thought of instead of having two part of a rope id have one singular rope from the middle to the top where I could find the difference in height. But the...
View full post »
Thread 'Voltmeter readings for this circuit with switches'

Thread 'Voltmeter readings for this circuit with switches'

TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
View full post »

Similar threads

Building a Marble Catapult
Replies
3
Views
928
Projectile Problem: Marble falls from Desk
Replies
19
Views
5K
Positive and negative signs on Work
Replies
1
Views
2K
Marble Stack Equilibrium: Solving for Forces at Contact Points
Replies
19
Views
6K
Kleppner:Mechanisc: 7.33 Grooved cone and mass
Replies
12
Views
2K
How Does a Marble's Speed Change as It Rolls Down a Hemispherical Bowl?
Replies
1
Views
3K
Marble rolling on ramp harmonic motion
Replies
9
Views
3K
Projectile Motion: Method of finding initial velocity in a lab
Replies
1
Views
3K
Velocity required to escape the solar system
Replies
15
Views
1K
Physics 1 Parabolic Motion Question Confusion
Replies
15
Views
1K

Hot Threads

Recent Insights

Back
Top