T-Boner-ism # 46

From : transurgeon

Q: you cant convince me because 90% of the time you are wrong. helium is weightless on this planet because the forces pushing it away from the surface are greater than gravity trying to pull it back. weight is a measurement of force toward the planet not the objects mass. so a ship on the atlantic is weightless because the forces pushing it away from the ocean floor earth are greater than the gravity trying to pull it back. ok no matter how a tried to keep from arguing these i just cant leave this one any longer.... helium is weightless on this planet because the forces pushing it away from the surface are greater than gravity trying to pull it back. thats his statement right yep ok then! go pick up a 75 lb bar bell.....the force you are excerting on the bar bell is exceeding that of gravity. yet your arms will get tired after holding the bar bell for a while that would be due to the fact that your muscles are exerting a force on the bar bell to counter the force of gravity. .......now! why would that be its weightless right in relation to the earth yes it would but in relation to the person holding it up not at all because the person holding it up would be supplying the force against gravity. -- if at first you dont succeed youre not cut out for skydiving .