General > General Technical Chat
Physics Question - ma = mg
bostonman:
If anyone cares, I had a real world discussion at the gym today about lifting weights.
A few guys were doing lat pull downs and someone asked the other guy why he can do a pull up, but, he can't do equal weight on a lat pull down machine.
I chimed in stating I've had similar thoughts because many people can do a pull up which involves lifting their own body weight, however, they can't pull down an equal amount.
We concluded that many factors come into play such as slightly swinging the body, and, more muscles are being used for a pull up.
Anyway, thought everyone would get a chuckle out of this story.
bostonman:
BTW, the other day I was thinking about this thread.
While I've asked certain basic physics questions, or maybe I assume they are basic, and I can certainly find formulas in a book, I find that discussing certain aspects offers much more than books some time.
At least for me, sometimes putting it all together doesn't come natural. While simply picking up an object is physics 101, getting down to the deep details that some responses were, or simply analogies connecting everyday real life stuff, really makes (at least myself) see common tasks in a different light.
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