Sliding down the curved/straight slide

  • Thread starter Thread starter cloveryeah
  • Start date Start date
  • Tags Tags
    Slide Sliding
Click For Summary
SUMMARY

The discussion centers on the physics of two boys sliding down different types of slides: one curved and one straight, both starting from the same height. It is established that the boy on the curved slide reaches the bottom first due to the steeper initial descent, which allows for greater acceleration from gravity. The concept of the brachistochrone curve is introduced, indicating that the optimal path for minimizing descent time is a specific curve shape. The final velocities may be the same, but the time taken differs due to the varying distances and acceleration profiles of the slides.

PREREQUISITES
  • Understanding of gravitational potential energy and kinetic energy (1/2 mv^2 = mgh)
  • Basic knowledge of acceleration and motion dynamics
  • Familiarity with the concept of the brachistochrone curve
  • Ability to analyze motion along different paths
NEXT STEPS
  • Research the principles of the brachistochrone problem and its applications
  • Study the effects of different slide shapes on acceleration and time of descent
  • Explore the physics of potential and kinetic energy in different motion scenarios
  • Learn about the mathematical modeling of curves in physics
USEFUL FOR

Students studying physics, educators teaching motion dynamics, and anyone interested in the principles of acceleration and energy conservation in real-world scenarios.

cloveryeah
Messages
25
Reaction score
0

Homework Statement


a boy is sliding down a curved slide, another boy with same mass is sliding down a straight slide. if both slides have the same height, which of them will reach the bottom first?

Homework Equations

The Attempt at a Solution


i m thinking if it is related to 1/2 mv^2 = mgh
and final v will be the same in both cases
but how can i calculate the time required?
 
Physics news on Phys.org
if the final velocity is not the same, speed is the same
one has a larger distance to cover, so it would take a different time to reach the ground.
"Even though it is longer than the other tracks, the curved slide is the quickest. This is because it is much steeper at the beginning, which means that gravity has a greater effect on the ball causing it to accelerate more quickly and reach its top speed sooner."
Also, what if the curve of the slide is a brachistochrone curve?
see this, it has the total explanation :http://www.qedcat.com/misc/94.html
 
Last edited:
  • Like
Likes   Reactions: cloveryeah
In case it's not clear from Suraj's reply, there's not enough information. It depends on the details of the curve. However, there are some simple assumptions that can be made which allow an answer. For a start, it is obvious that if the curved slide starts off descending more slowly than the straight slide it can take longer, so assume that for any given horizontal distance from the start the curved slide is no higher than the straight slide.
 
Last edited:

Similar threads

Replies
4
Views
1K
Replies
4
Views
1K
Replies
12
Views
2K
  • · Replies 17 ·
Replies
17
Views
2K
Replies
5
Views
3K
Replies
4
Views
3K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 20 ·
Replies
20
Views
6K
Replies
7
Views
4K
  • · Replies 4 ·
Replies
4
Views
2K