aoede
I have three questions. I don't know if any of these questions have "physics" answers:
1) With all five fingers together, wave bye bye. Now abduct them (spread them out) and wave bye bye. The addition of the abductor muscles creates a strain on the flexors. What is that secondary disrupting force called?
2) If you lie your arm flat on a table and poke the table, you could strain your tendons but if you poke the table from above, you won't strain. What is the flat position called? Like, a crane lying on the ground can't swing a wrecking ball but, in the upright position it can.
3) A fishing pole is thick at the base and thin at the tip so that the flexibility can cast the lure most efficiently. What is that construction called . . . where the base is stronger? The base moves the least so the tip moves the most causing the lure to go the furthest. For instance, swatting a fly, the shoulder moves a little but the hand travels two or three feet.
1) With all five fingers together, wave bye bye. Now abduct them (spread them out) and wave bye bye. The addition of the abductor muscles creates a strain on the flexors. What is that secondary disrupting force called?
2) If you lie your arm flat on a table and poke the table, you could strain your tendons but if you poke the table from above, you won't strain. What is the flat position called? Like, a crane lying on the ground can't swing a wrecking ball but, in the upright position it can.
3) A fishing pole is thick at the base and thin at the tip so that the flexibility can cast the lure most efficiently. What is that construction called . . . where the base is stronger? The base moves the least so the tip moves the most causing the lure to go the furthest. For instance, swatting a fly, the shoulder moves a little but the hand travels two or three feet.