The discussion revolves around determining the initial speed of a block just before it impacts a spring, utilizing the work-energy principle. The problem involves concepts from mechanics, specifically kinetic energy, potential energy, and work done by the spring.
The conversation is ongoing, with participants exploring various interpretations of the problem. Some have provided insights regarding the inclusion of gravitational potential energy, while others are still grappling with the implications of their calculations. There is no explicit consensus, but several participants have indicated they are on the right track.
Participants are discussing the impact of significant figures on their calculations and the necessity of incorporating gravitational potential energy into their energy conservation equations. There is a recognition of the need to account for both kinetic and potential energy in the context of the problem.
I assume you want to know why the answer to question 3 is incorrect.isukatphysics69 said:
Yes, but you have given too many significant digits in the answer.isukatphysics69 said:
It looks right to me. I got the same answer independently.isukatphysics69 said:
i just tried 3.2m/s incorrecttnich said:
I think we forgot about gravitational potential energy.isukatphysics69 said:
my book says ΔKE = KFINAL - KINITIAL = WA+WGtnich said:
I don't know what WA and WG represent.isukatphysics69 said:
youre righttnich said:
So you need to add up the potential energy (due to gravity and the spring) and kinetic energy. Do this at both the point where the block hits the spring and where it bottoms out.tnich said:
OK, you have all of the pieces. Now you need to write your conservation of energy equation.isukatphysics69 said:
Yes. That's what I got, too.isukatphysics69 said:
