Recent content by carhartt

Gottcha. I just wanted to throw in this update so anyone looking this up can see a final reference. There are two things here that needs to be figured out: 1. Horizontal pressure along the wall, which is the integral part, summing up the forces along the wall at a unknown depth so the...

Hydrostatic force on the wall= Maximum force of static friction(pretty much the sum of all of the forces along the wall) right? Is there a way to find the solution to this without the force of friction?

the equation output was 2.2m which is the correct answer by the way... clueless

I am completely confused as well. We completed the chapter on fluids in class and never mentioned friction forces. I assumed this is one of the problems providing an extra element to able to recognize it and defer. My understanding is to determine the force of the wall to be withstood...

Pascals principle. Ptotal = Pair + rho*gh

Homework Statement A square pool with 100-m-long sides is created in a concrete parking lot. The walls are concrete 90 cm thick and have a density of 2.5 g/cm3. The coefficient of static friction between the walls and the parking lot is 0.49. What is the maximum possible depth of the pool...

There is no curve considering a the lowest test and lab grade is dropped. I do believe my prof is very good with partial credit and I am writing all my steps down. I've completely bombed the exam the partial credit is what's keeping me alive. I do not have a particular strategy for exams just...

I'm a current sophomore, with a 3.8 GPA. Doing exceptionally well in all my courses, very good at math with A's. I knew coming into the semester Physics would be the 500-lb gorilla and have spent all hours of the day practicing as many problems and understanding the content throughly. My...

Yep, I don't think I explained it quite clearly above. The final speed of the ball with mass 'm' is the same in the momentum and energy conservation equations. That is the variable you set equal to each equation to then solve for the only other remaining velocity.

Of course, that was it. Thank you.

You need two equations. Use conservation of momentum to set one eq. And conservation of energy to set the other. The speed of the ball with mass 'm' will be the same, they can be used to equate the two equations together for you to solve for speed and direction of the ball with mass '3m'. I...

To find your the slowest speed, your force of friction will be pointed the other direction. Redraw your forces. Think of any object (toy car) rolling on a notebook at a certain angle. If it is going really slow, it will start to 'slide' downwards right? It does not have enough speed to keep...

Seems like you need to treat each spring as a separate system. They have different spring constants so will put out different forces. k1x = mg gives x1=mg/k1 similarly x2 = mg/k2 add x1 and x2 gives you total distance the spring is stretched. Just my $0.02, this is my first year taking...

Homework Statement Diameter = 20 cm, Massplywood = 8.8kg, Masswheel = 1.86 kg Length of incline = 34 m Masstotal = 16.24 kg Homework Equations Energybefore = Energyafter KEtranslational = 1/2mtotalv2 KErotational = 1/2 I ω2 Isolid disk = 1/2 M R2 Ug = mgh v = rω The...