Re: Physics Questions

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#67

From: Darryl Steinert
Date: Fri, 12 May 1995 00:00

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>2. The formula for calculating %error is
>        (measured value - accepted value)/ accepted value    x100%
>   They had to calculate the total torque on a mobile (made of wooden blocks
>   and fishing line). The total torque on each block should be zero for
>   it to be in equilibrium, BUT how do you calculate the %error when the
>   accepted value is zero?
>
>  The key to this is that you are actually making two sets of independent
measurements, the clockwise torques and the counter-clockwise torques.  When
comparing two independent measures of the same thing you calculate the
percent difference.  It is the difference divided by the sum times 100%.

               (|CWtorq. - CCWtorq|/(CWtorq. + CCWtorq.))*100%

Darryl L. Steinert
Dept of Physics               |voice mail: 812-866-7311
Hanover College               |fax: 812-866-7114
PO box 108                    |e-mail: steinert@alpha.hanover.edu
Hanover, IN 47243-0108   |"make it as simple as possible, but no more so"
USA

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From: Darryl Steinert <steinert@HANOVER.EDU>
Subject: Re: Physics Questions
Date: 1995/05/12
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