MHB How to Prove the Ratio of Radii and Angular Speeds of Two Connected Pulleys?

  • Thread starter Thread starter urekmazino
  • Start date Start date
  • Tags Tags
    Pulleys
Click For Summary
To prove the ratio of radii and angular speeds of two connected pulleys, it is essential to understand that the length of the belt moved past each pulley remains constant over time. Given two pulleys with radii r1 and r2 rotating at angular speeds w1 and w2, the relationship can be established using the formula r1/r2 = w2/w1. This is derived from the fact that the linear speed of the belt is equal for both pulleys, leading to the conclusion that the ratio of the radii corresponds to the inverse ratio of their angular speeds. The absence of specific numerical values does not hinder the proof, as the relationship is purely algebraic. This fundamental principle is crucial for solving problems involving connected pulleys in mechanics.
urekmazino
Messages
3
Reaction score
0
Hello there, i need some help on my homework. there's no given numbers that's why it's hard for me to answer this one.

Two pulleys with radii r1 and r2 rotate at angular speeds of w1 and w2. if the pulleys are connected by a belt, show that r1/r2=w2/w1
 
Mathematics news on Phys.org
Use the fact that the length of the belt moved past each pulley in any period of time is the same for both pulleys.
 
Here is a little puzzle from the book 100 Geometric Games by Pierre Berloquin. The side of a small square is one meter long and the side of a larger square one and a half meters long. One vertex of the large square is at the center of the small square. The side of the large square cuts two sides of the small square into one- third parts and two-thirds parts. What is the area where the squares overlap?

Similar threads

  • · Replies 2 ·
Replies
2
Views
7K
Replies
8
Views
5K
  • · Replies 2 ·
Replies
2
Views
14K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
Replies
2
Views
2K
Replies
2
Views
3K
  • · Replies 20 ·
Replies
20
Views
3K