Posted by Charles on Wednesday, February 6, 2008 at 9:32pm.
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?
physics - Damon, Wednesday, February 6, 2008 at 9:41pm
rpms if all in a row
If any are on the same shaft. I do not have your picture.
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
physics - Damon, Wednesday, February 6, 2008 at 9:50pm
Now you tell me !
physics - Charles, Wednesday, February 6, 2008 at 9:51pm
physics - Damon, Wednesday, February 6, 2008 at 9:53pm
B = 800*30/50 = 480 rpm
C = 480 rpm
D = 480 (20/N) = 300
N = 32
physics - Charles, Wednesday, February 6, 2008 at 9:58pm
physics - Damon, Wednesday, February 6, 2008 at 9:59pm
You are welcome :)
physics - Damon, Wednesday, February 6, 2008 at 10:48pm
Think of the body all alone in space
Add up all the force vectors on it and equate that to mass times acceleration.
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