Please Solve My Gear Problem

I can barely see this.

Isn't inch pounds the force?

Where do you apply 3 pounds?

If it rocks back and forth you have a dynamic situation.

6 pounds would be taken where?

I have my glasses on but it does not seem to be a question for rounds.

(with 10 teeth here and there the answer is easy anyway).

Whats the real problem?

Poorly stated and illustrated quiz problem. Your answer may be correct for the middle position, but not for the others; and I'm not sure about the middle.

I would have given it a shot.........if I could see the damn thing

Sorry did not realize this would be tiny!

should read:

Given:

Sun gear one half inch radius 10 teeth

half blue inner gear 10 teeth

3 inch pounds applied to rock back and forth

solve for force A

My answer is 6 inch pounds?

i don't know if i am right or wrong

tom

Your first answer was 6 pounds!

Somebody marked my response OT, not sure why.

Because inch-pounds isn't a force.

Right. Best to be correct if correcting someone else.

i thought 3 inch pounds applied to the half gear was 3 pounds one inch from center

i don't know any other way to say that

thanks tom

The word you want is "torque", which you are sometimes confusing with force.

I am not sure I understand the problem so that I only try to explain what I understood.The geared sector rolls without sliding on the sun. Its COG is the black point at distance "e" from the sector center and a from the contact point to the sun in the middle position. The weight is considered as applied at the COG. When the sector "rolls" to a 45° position right or left due to the number of teeth ratio the rolling instantaneous center moves with 90° on the sun. The force gives a moment with respect to this center which has to be equal to the moment given by the sector weight in the new COG position. Since the COG is not known in proportion to the radii it is not possible to compute the force. It should be something somewhere which is either no clear in general or not clear to me.

Thank you! .... i believe you are correct .... 6 pounds

Impressive answer to a complicated question.

Not easy to view .... extremely difficult to solve.

You may even realize the significance.

2 years to see if an answer fits or not this is a real performance!

Sad but true, working on this much longer than two years. Maybe you could still help me. Please check your CR4 mail box. thanks tomkoko