Since I started this thread I feel obligated to ask some of you guys to take a deep breath. I think it was a fair question worthy of asking and if you guys wish to debate how American high schools blow please do it elsewhere.
OK. We seem to have a consensus that the scale would indeed read 100kg. I think the concept I was missing was that the spinning weight is not on the same plane as the center. (i.e. not horizontal) It makes sense that the weight can be transferred down to the scale given the vertical component of...
I guess I didn't realize that the string would never become horizontal relative to the hand/motor...
DaleSpam, that's kind of what I was getting at. The mass of the ball is unchanged, but I was debating if the weight perceived at the scale would change given the weight is possibly external to...
So what you are saying is that it doesn't matter how fast the weight is spinning because you are still pushing up the 1kg anyway? Let's change the scene a bit. Let's say the man holds a high speed electrical motor attached to a string and weight, again with the string and weight equaling 1kg for...
Who was it that said "Give me a place to stand and I can move the world"? I'm just not as confident as you are on this. Astronauts experience weightlessness in orbit but there is about the same amount of Earth's gravity on them as us on the ground. They don't experience the sensation of weight...
My counter to the comparison of the top is that the top was and remains one unit so to speak. If the scale reads 100 how is that 1kg being transferred to the scale? If the string is horizontal how is the weight on the scale the same?
Imagine a person weighing 99kg stands on a bathroom scale. He reads 99kg. That same person then grabs a ball attached to a string that weighs 1kg together. Since he never left the scale he now reads 100kg total.
Now imagine he spins the ball and string like a helicopter overhead. (Since he's a...