Pressure=force/area - cannot arrive at correct answer?

  • Thread starter Thread starter teggenspiller
  • Start date Start date
Click For Summary

Homework Help Overview

The problem involves calculating pressure using the formula P = F/a, where a person's weight is distributed over the area of snowshoes. The context is physics, specifically dealing with pressure and force distribution.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the calculation of pressure, questioning the conversion of area from cm² to m² and the relevance of using two snowshoes in the area calculation.

Discussion Status

Some participants have provided clarifications regarding unit conversions, while others express confusion about the calculations and the correct area to use. There is an ongoing exploration of the assumptions made in the problem setup.

Contextual Notes

There appears to be a misunderstanding regarding the conversion of area units and how to apply the total area when considering two snowshoes. The original poster's calculations suggest a misinterpretation of these conversions.

teggenspiller
Messages
94
Reaction score
0
pressure=force/area -- cannot arrive at correct answer!?

Homework Statement




A person of weight of 900 N is standing on snowshoes. Each snowshoe has area 2500 cm2. Find the pressure on the snow.

A. 0.18 Pa
B. 0.36 Pa
C. 1800 Pa
D. 3600 Pa


Wrong Points Earned: 0/1
Correct Answer: C
Your B

Homework Equations



P=F/a

The Attempt at a Solution



P= 900N/25m^2

and i keep getting 36. how do i get to 1800??

i understand there are 2 snow shoes, how is that relevant to finding the area? and why am i 100 off?
 
Physics news on Phys.org


1 cm = .01 m

so 2500cm^2 = 25 m^2

what am i doing wrong>
 


2500 (cm^2) = 0.25 m^2
 


well duhh, teggenspiller. thank you SO very much for clearing that up!
 

Similar threads

  • · Replies 23 ·
Replies
23
Views
2K
Replies
6
Views
4K
  • · Replies 2 ·
Replies
2
Views
3K
Replies
13
Views
1K
Replies
6
Views
3K
Replies
3
Views
1K
Replies
2
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 23 ·
Replies
23
Views
6K
  • · Replies 5 ·
Replies
5
Views
2K