All stoppers are of equal strength.
D is best
I don't understand the constraints. Is there something unseen trying to turn them in the direction shown but not allowing any sideways motion? Or would sideways motion be allowed to occur along with rotation? Are we being g asked which would require the most torque to break the stoppers?
I assumed it was "which one has the highest friction coefficiency.
N
A and C are the obvious toss outs.
without being able to direct measure the length the position I'm inclined ( yes I went there) to say B has the longest moment of inertia to overcome if the torque applied is instantaneous and that's my final answer.
I'm just a biologist.
If the coefficient of friction between the block and the stoppers isn't extremely high, there is a wedging action in b that increases the force on the stoppers. I go with d.
Here, chew on this for a while.....Harvard Students couldn't solve, but kindergarten kids could!
No
the sun.
I'd go with B
i will go with "C". it is the only one not symmetrical.
First puzzle, you figure it out: https://twitter.com/engineers_feed/status/1646768107132968961
Second puzzle answer: No
What about a plane on a conveyor belt?
