Pressure= Force/ Area

  • Thread starter physgrl
  • Start date
  • #1
138
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Homework Statement



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

a. 0.18 Pa
b. 0.36 Pa
c. 1800 Pa
d. 3600 Pa

Homework Equations



P=F/A

The Attempt at a Solution



I tried doing F/(2*(A))
A=2500cm2/1002cm2 *1m2=.25
P=900/(2+.25)
P=1800

but the answer key says it it .18 instead
 

Answers and Replies

  • #2
1,198
5
A Pascal is 1 Newton per square meter. I agree with your answer.
 
  • #3
8
0
Nope ignore me
 
  • #4
sophiecentaur
Science Advisor
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physgrl
Your answer looks right to me (if you want the answer in Pa) - it can be done in your head. You didn't actually put in the units for your answer so you are strictly not right or wrong - your answer is just incomplete.
The pressure in N/cmsq is 0.18 but which unit is given in the mark scheme?
 
  • #5
138
0
The answers are all in Pa
 
  • #6
sophiecentaur
Science Advisor
Gold Member
27,202
5,908
So you are right and 'the answer' looks wrong.
 
  • #7
138
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Ok lol
 

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