Mass on a Spring semi-submerged in a liquid

AI Thread Summary
The discussion centers on the calculations involving a mass on a spring submerged in liquid, with a focus on the definitions of variables related to density and height. The participant expresses confusion over differing interpretations of the variable definitions but concludes that their approaches yield equivalent results. They suggest eliminating gravitational force from the equations to simplify the problem. Ultimately, the participant asserts that their final result depends solely on the spring constant, height, density, gravitational acceleration, and volume. The conversation highlights the importance of consistent variable definitions in physics problems.
MatinSAR
Messages
673
Reaction score
204
Homework Statement
According to the figure, the metal cylinder with mass M and volume V is connected to a fixed point from above by a spring with spring constant k and it floats inside a liquid of density p so that half of its height is inside the liquid. What weight should we put on it so that two-thirds of the height is inside the liquid?
Relevant Equations
Fluid mechanics.
Hi , Can someone tell me wether my answer is corrrect or false ?
1666127721249.jpeg
 
Physics news on Phys.org
I'm getting something different from you. The difference is I define ##d'## in terms of ##d## and ##h## differently. Actually, they work out equivalently. If you just eliminate ##Mg## via your first equation, and put ##L## in terms of ##d## and ##h## , I think we will get the same result.

My end result is purely a function of ##k,h,\rho,g,V##
 
Last edited:
Thread 'Voltmeter readings for this circuit with switches'
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Thread 'Correct statement about a reservoir with an outlet pipe'
The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
Back
Top