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Janez
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We put object on weight ang get a mass. What would that mass be if we put a spring between object and weigt, so that the spring woul shrink to half its original size?
Can you rephrase this? It's not clear what you are describing.Janez said:We put object on weight ang get a mass.
Again, your scenario is unclear. Are you placing a mass on a spring, so that the spring is compressed? The amount of compression depends on the stiffness of the spring (its spring constant) and the weight of the mass.Janez said:What would that mass be if we put a spring between object and weigt, so that the spring woul shrink to half its original size?
You have something you call the "object" and something else you call the "weight". It's unclear what you are describing or what force you are asking about.Janez said:How would we calculate the force when the spring is betwen object and weight?
Maybe you're asking this question: "Do I measure the same weight with a scale when there is a mass and a spring sitting next to each other on the scale, versus if I put the mass on top of the spring on the scale?"Janez said:What would that mass be if we put a spring between object and weigt,
Then the scale will measure the same weight in both cases. And in my example above, if the spring is also sitting next to the mass in your first drawing, then the scale will measure the combined weight of the spring and mass in both cases, regardless of whether the spring us under the mass or just sitting beside it on the scale.Janez said:Nothing, for the purpuse of this question.
Sure. Assuming equilibrium -- that the object isn't falling.Janez said:So the spring transfer the whole force like solid object would?
As the spring is not accelerating, the external forces on it must be balanced (Newton's second law). Therefore, the downward force of the mass on the spring (weight of mass) must be equal to the upward force the scale exerts on the spring. So, the scale shows the weight of the mass.Janez said:So the spring transfer the whole force like solid object would? It does make sense, altought I found it somewhat unitnuiteve and I just wasnt sure.
Or, imagine you were lying on the ground with a large spring on your chest. Would you allow an elephant to be lowered onto the spring? That might decide the issue!Janez said:So the spring transfer the whole force like solid object would? It does make sense, altought I found it somewhat unitnuiteve and I just wasnt sure.
Yes, and there are no prefectly rigid objects, they are all "springs".Janez said:So the spring transfer the whole force like solid object would?