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Classical Mechanics Level 1

The weight of a sand bag is 40kg. In a hurry it was weighted as 40.8kg. The error percentage is:

0.5% 2% 1.5% 1%

Ankit Vijay by Ankit Vijay , 22, India

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4 solutions

Bharath Spidy
Jul 9, 2014

40 kg = 1 % = 0.4 --> Miscalculation amount 0.8 so, 04+04=0.8 so 2 %

2 Helpful 0 Interesting 0 Brilliant 0 Confused

Error percentage = Error Original amount × 100 % \dfrac{\text{Error}}{\text{Original amount}}\times100\%

Error percentage = 40.8 − 40 40 × 100 % \dfrac{40.8-40}{40}\times100\%

Error percentage = 0.8 40 × 100 % \dfrac{0.8}{40}\times100\% = 80 40 % \dfrac{80}{40}\% = 2 % \boxed{2\%}

In my opinion, this should be an Algebra problem instead of Classical Mechanics.

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Ramiel To-ong
May 29, 2015

ERROR = ( 40.8 - 40 )/40 = 0.02X100 = 2%

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Parth Jolly
Jul 4, 2014

((new-original)/original) 100 ((40.8-40)/40) 100 (0.8/40) 100 8/400 100 8/4 2

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