Physics: Torque and Rotational Motion

Physics
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A dental bracket exerts a horizontal force of 66.8 N on a tooth at point B in the figure. 

What is the torque on the root of the tooth about point A?

Jul 5th, 2015

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Jul 5th, 2015
Jul 5th, 2015

Torque = r F sin@

here, @=48

          r=1.2/100=0.012

         F= 66.8 N

Torque =0.012*66.8 *sin48

            =0.012*66.8* 0.74

            =0.593  N m

Jul 5th, 2015

When I submitted the answer it says the response differs from the correct answer by more than 10%

Jul 6th, 2015

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Jul 5th, 2015
Dec 6th, 2016
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