Question
If gear A has 30 teeth and is spinning at 800rpm, gear B has 50 teeth and gear C has 20 teeth and gear D is spinning at 300rpm. How many teeth does gear D have?
Answers
Damon
rpms if all in a row
If any are on the same shaft. I do not have your picture.
B 800*(30/50)
C 800*(30/50)*(50/20)
D 800*(30/50)*(50/20)*(20/N) = 300
or more easily since all teeth are the same size
800*(30/N) = 300
N = 80
If any are on the same shaft. I do not have your picture.
B 800*(30/50)
C 800*(30/50)*(50/20)
D 800*(30/50)*(50/20)*(20/N) = 300
or more easily since all teeth are the same size
800*(30/N) = 300
N = 80
Charles
B and C are on the same shaft
Damon
Now you tell me !
Damon
B = 800*30/50 = 480 rpm
so
C = 480 rpm
D = 480 (20/N) = 300
N = 32
so
C = 480 rpm
D = 480 (20/N) = 300
N = 32
Charles
thank you
Damon
You are welcome :)
Puzzled
How exactly does Free Body Diagrams work?
Damon
Think of the body all alone in space
Add up all the force vectors on it and equate that to mass times acceleration.
Add up all the force vectors on it and equate that to mass times acceleration.