Calculate Pressure: Elephant Mass 4000 kg, Leg Diam 25 cm

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Homework Help Overview

The discussion revolves around calculating the pressure exerted by an elephant with a mass of 4000 kg, given the diameter of its legs is 25 cm. The problem involves understanding the relationship between force, area, and pressure in a physics context.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the calculation of pressure using the formula P=F/A, where they attempt to determine the area based on the diameter of the elephant's legs. There is also a question regarding the number of legs the elephant has, which impacts the overall pressure calculation.

Discussion Status

The discussion is ongoing, with participants questioning the assumptions made about the number of legs and the implications for the pressure calculation. Some guidance is offered in terms of clarifying the number of legs, but no consensus on the correct approach has been reached.

Contextual Notes

Participants note that the calculations yield a pressure value that does not match an expected answer, prompting further exploration of the assumptions regarding the number of legs and the area calculation.

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Homework Statement


Calculate the pressure that an elephant with a mass of 4000 kg on the ground as the diameter of his legs is 25 cm

Homework Equations


P=F/A
F=mxg

The Attempt at a Solution


pressure = F/ A
diameter = 25 cm =>0.25m
I suppose his leg has form of circle so A = 3.14x (0.125)^2=0.049087
F=mass x g
F=4000kg x 9.81
F=39240 N
Thus,
P= 39240N / 0.049087 m^2 = 799390 Pa
But the answer should be 2.000x10^5 Pa


 
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Does the elephant have only one leg?
 
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Nanu Nana said:

Homework Statement


Calculate the pressure that an elephant with a mass of 4000 kg on the ground as the diameter of his legs is 25 cm

Homework Equations


P=F/A
F=mxg

The Attempt at a Solution


pressure = F/ A
diameter = 25 cm =>0.25m
I suppose his leg has form of circle so A = 3.14x (0.125)^2=0.049087
F=mass x g
F=4000kg x 9.81
F=39240 N
Thus,
P= 39240N / 0.049087 m^2 = 799390 Pa
But the answer should be 2.000x10^5 Pa

How many legs does an elephant have... :smile:

EDIT -- Rats! Beaten out by a phone booth again!
 
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gneill said:
Does the elephant have only one leg?
LOL . 4 legs indeed . thank you
 
berkeman said:
How many legs does an elephant have... :smile:

EDIT -- Rats! Beaten out by a phone booth again!
4 :D
 
berkeman said:
EDIT -- Rats! Beaten out by a phone booth again!
:smile:
 

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