A lever scale is balanced with a beaker filled of air on one side. The scale is very sensitive and can easily measure a change in weight of about 1/2 mg.
What happens If you put your finger carefully into the beaker without touching the glass?
3 answers
since you displace some of the air in the beaker, its side of the lever should rise.
I don't think it is correct but i am myself not sure what is the right answer.
Yeah, you may be right. It could be that the hydraulics involve prove that the weight of air in the beaker remains constant regardless of how much is displaced, but I'd have to research it. I guess you can do that on your own, or hope Damon or someone will stop by with greater expertise.
3 answers