Darkoz
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because weight is related to relativistic mass
And this relates to weight lifting how?
And to the original question once again, how does weight decrease with speed?
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because weight is related to relativistic mass
I get the analogy Oni, but its not correct.
If I stand on scales and jump, the scales read less. I still weigh the same though.
weight stays the same, just a greater force is applied to it
this, the weight remains the same all the time because the force of gravity never changes, but the force you apply to the weight exceeds the of gravity allowing it to come off the floor, but the weight is still the same no matter what.All this has nothing to do with lifting a weight so I'll ask again Oni, you said the weight will decrease with speed, so I'm asking how does the weight get lighter as you lift it faster?
All this has nothing to do with lifting a weight so I'll ask again Oni, you said the weight will decrease with speed, so I'm asking how does the weight get lighter as you lift it faster?
The weight does not get 'lighter' as you lift it faster, and the argument put forth (which is getting more convoluted and less correct) is not only a poor analogy of how weight works, but also incorrect. The force that you exhibit on a set of scales (which at rest is purely m*G) is your weight. Jumping up and down does not decrease or increase your weight, but increases the force that is exhibited as a result of the velocity and direction of movement of the mass. This change in force is not a change in weight of the object, but purely a positive or negative force which changed the apparent weight that you must move.
With respect to the lifts, it doesn't change the weight of the barbell, but does change the force required to move/stop it.
so a 5kg stone that is thrown at the floor isnt 5kg when it hits the floor?Weight of an object = the force on the object
This is a fact
If the force required is less, the weight is less
How is the force less?