Axle twist question...

[1000watt]

As the tire turns clockwise, does the axle want to twist counter clockwise?

 

[docnjoj]

Yep!
otherDoc

 

[bigmoose]

As said above. For every action there is an equal and opposite reaction. Also keep in mind the force trying to spin out the itty bitty shaft is multiplied by the tire radius divided by the shaft flat radius, such that the two torques are equal. Fshaft*Radius shaft = Ftire*Radius tire

 

[liveforphysics]

Yep.

10lbs of forward thrust from the motor at a 13" radius (26" diameter) means 520lbs of force at the 1/4" radius (1/2" diameter) of the axle.

 

[spinningmagnets]

For every action, there is an equal and opposite reaction

bigmoose, you just described every discussion I ever had with my ex-wife! Until now, I hadn't realized how much physics affected that relationship (opposites attract,...bodies in motion....). I once thought I understood Heisenbergs uncertainty principle, but now I'm not sure. Einstein married his cousin, so I guess sometimes love (like physics) is relative.

A sodium molecule was passing by an electrolyte bar, and he felt the sudden urge to go in and violently combine with a chlorine ion...he was charged with a salt.

LFP, thanks for the math!, I'm adding that to the torque-arm thread...

 

[bigmoose]

Well said spinning magnets! Well said.

I enjoyed your sodium/chlorine joke. My daughter is a chem major, I think she'll get a good chuckle out of it!

 

[Toorbough ULL-Zeveigh]

For every action there is an equal and opposite reaction.

newton's third has been partially repealed.
the 'opposite reaction' part is no longer true & demonstrably disproven.

 

[John in CR]

Well said spinning magnets! Well said.

I enjoyed your sodium/chlorine joke. My daughter is a chem major, I think she'll get a good chuckle out of it!

Yeah, I don't imagine those chem majors have too many inside jokes.

 

[spinningmagnets]

Old chemistry professors don'tr die...they just fail to react.

The student died from drinking,
Then fell upon the floor.
For what he thought was water,
was H2S04...

Two molecules bumped into each other, and one asked "are you OK"?
"I think I lost an electron" he replied, then the other responded "are you positive"?

The old chemistry professor berated his students by saying "when I was in school we knew ALL the elements"! Yes, reponded a student, but back then there were so few..."

More?

 

[Mike1]

Magnetism/marriage/relationships.

Every couple has a moment in a field.

 

[fifthmass]

OK,

A sodium atom walks into a police station and says "Someone stole one of my electrons". The desk sergeant asks "are you sure"? The atom replies "I'm positive".

regards,
Bill