Originally Posted by julian
I am bringing to your attention that the parallel with a hammer/nail is very "weak"
The nail and hammer are rigid bodies.
A ball and strings are at the different end of the spectrum.
Additionally there are multiple problems with a dictionary/choice of words
for example I do NOT know the meaning of the phrase "solid contact"
Btw:the "if statement" with the the first part of the "if clause" false is always true.
I am talking about the sentence starting with "because"
I'm sorry. I'm a foreigner, so my English is not good enough to clearly express some ideas, but I tried my best.