Most efficient way to convert rope movement (KE) to rotational KE?

  • Thread starter narayan821
  • Start date
  • #1
I've got a moving rope that turns a shaft, which then turns a generator to create electricity. Please point me to a good resource that guides me to perform this efficiently. I would like to maximize the conversion of kinetic energy of the pulled rope system into rotational kinetic energy of the shaft, and maximize electrical energy output.
 

Answers and Replies

  • #2
DaveE
Gold Member
1,110
832
I don't think we can answer this unless you describe how the speed of the rope varies with load.
 
  • Like
Likes 256bits and russ_watters
  • #3
russ_watters
Mentor
20,118
6,618
I've got a moving rope that turns a shaft, which then turns a generator to create electricity. Please point me to a good resource that guides me to perform this efficiently. I would like to maximize the conversion of kinetic energy of the pulled rope system into rotational kinetic energy of the shaft, and maximize electrical energy output.
This is very vague. We need to see a diagram or get a much better description to know what the system is doing. But it seems like it should be trivial to make it very efficient: a good belt/pulley system can run upwards of 95% efficient.

...however, they aren't really dealing in kinetic energy, they are transforming work. There are situations where kinetic energy may be desired, but without knowing what yours is, I can't say if it is one.
 
  • Like
Likes DaveE, 256bits and jbriggs444
  • #4
anorlunda
Staff Emeritus
Insights Author
9,012
5,924
We also need to know the properties of the rope. Resistance of the rope to bending/unbending will be one source of efficiency loss.
 
  • Like
Likes berkeman
  • #5
berkeman
Mentor
58,755
8,878
Welcome to PhysicsForums. :smile:
I've got a moving rope that turns a shaft, which then turns a generator to create electricity.
Why are you using a rope? There's a reason that belts and chains are used much more for this type of power transfer application...
 
  • Like
Likes DaveE

Related Threads on Most efficient way to convert rope movement (KE) to rotational KE?

Replies
25
Views
6K
Replies
13
Views
4K
Replies
13
Views
2K
Replies
9
Views
3K
Replies
5
Views
3K
  • Last Post
Replies
16
Views
4K
Replies
16
Views
1K
Replies
4
Views
2K
Replies
25
Views
20K
Replies
22
Views
12K
Top