Mass of Person & Apple: 60.2 to 60.7 kg

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Homework Help Overview

The problem involves a person standing on a scale that reads 60 kg, with an accuracy of 0.5 kg, and then picking up a 0.2 kg apple. Participants are discussing the combined mass of the person and the apple, considering the scale's accuracy and the implications of the readings.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Some participants attempt to calculate the total weight by adding the apple's mass to the scale reading, while others question the validity of the resulting values and the logic behind the choices presented.

Discussion Status

The discussion includes various interpretations of the scale's readings and the mass of the person. Some participants express confusion regarding the apparent discrepancy in the expected mass after adding the apple, while others seek clarification on the reasoning behind the proposed answer choices.

Contextual Notes

Participants are working within the constraints of the scale's accuracy and are questioning the assumptions made about the mass of the person and the apple. There is a lack of consensus on the correct interpretation of the problem.

UNknown 2010
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Homework Statement


A person stands on a scale and it read 60 kg. The accuracy of the scale is 0.5 kg. Then he picked a 0.2 kg apple. The mass of a person and the apple will be between _____ and _____


Homework Equations





The Attempt at a Solution


I DON'T WANT THE ANSWER, I WANT THE EXPLANATION
 
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post the solution i want to chek something
 
Well if the scale reads 60kg+0.2kg from the apple you get 60.2kg on the scale right? The accuracy (tolerance) is 0.5kg, which is +-0.5kg. So the weight will be between...It's kinda tricky question, but that's what I think.
 
Here are the choices:
a) between 74.5 kg and 75.5 kg
b) between 74.7 kg and 75.2 kg
c) between 74.5 kg and 74.7 kg
d) between 74.2 kg and 75 kg
e) between 75 kg and 76 kg


the pro: the answer is (a), but anyone can tell me why ?
 
UNknown 2010 said:
Here are the choices:
a) between 74.5 kg and 75.5 kg
b) between 74.7 kg and 75.2 kg
c) between 74.5 kg and 74.7 kg
d) between 74.2 kg and 75 kg
e) between 75 kg and 76 kg


the pro: the answer is (a), but anyone can tell me why ?

What? A 60 kg person picked up an apple and weighs 74.5 kg all of a sudden? That makes no sense.
 
yup that makes no sense for me
 
Oh, sorry !
the mass of the person is 75 kg.
 
Last edited:

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