- #1
Mr Balmond
- 6
- 0
Hi all
In respect to a simple gear system, two cogs are linked together, Cog A and Cog B. You apply a force to cog A, and cog A transmits this force to cog B through contact of the teeth on each cog (third law pair?)
If cog A pushes on cog B, does cog B not push back on cog A? Does this not therefore make it harder (if I am applying a force) to rotate cog A. Is it better to say that that resultant force on cog A is transmitted to Cog B?
If a third cog is introduced, does this also make it subsequently harder to rotate Cog A?
Finally how can the alternating rotation of the cogs be explained in terms of forces (correct me if I am wrong but it is not due to the third law pair that was mentioned earlier?)
Additionaly how does the attached image lend to an explanation that links to the above?
Thanks
In respect to a simple gear system, two cogs are linked together, Cog A and Cog B. You apply a force to cog A, and cog A transmits this force to cog B through contact of the teeth on each cog (third law pair?)
If cog A pushes on cog B, does cog B not push back on cog A? Does this not therefore make it harder (if I am applying a force) to rotate cog A. Is it better to say that that resultant force on cog A is transmitted to Cog B?
If a third cog is introduced, does this also make it subsequently harder to rotate Cog A?
Finally how can the alternating rotation of the cogs be explained in terms of forces (correct me if I am wrong but it is not due to the third law pair that was mentioned earlier?)
Additionaly how does the attached image lend to an explanation that links to the above?
Thanks