(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

During heavy rain, a section of a mountainside measuring 3.6 km horizontally, 0.53 km up along the slope, and 1.1 m deep slips into a valley in a mud slide. Assume that the mud ends up uniformly distributed over a surface area of the valley measuring 1.2 km x 1.2 km and that the mass of a cubic meter of mud is 1900 kg. What is the mass of the mud sitting above a 2.2 m2 area of the valley floor?

2. Relevant equations

v = lwh?

3. The attempt at a solution

To be honest, I can't necessarily figure out where to start. Looking at the question, I have a length, width and height... can I assume that the slope is a perfect vertical(lol) and use that as a length to find volume? This question seems really basic to me, the answer is looking for the mass of the mud sitting above a specific height, however, it states that a cubic meter of mud is 1900 kg.

Can I simply just multiply 1900 kg/m^2 by 2.2 m^2 to obtain 4180 kg ? I can't figure out why the other supplied information would be of any help at all. If I think about this logically, if there is mud stacked on top itself at a higher height, would that not change the mass ? This is where I thought maybe the dimensions of the mountain side were necessary.

Can anyone shed some light on this problem?

Thanks

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Basic measurements and conversion not so basic

**Physics Forums | Science Articles, Homework Help, Discussion**