Today we white boarded the problem we were given on Friday of a block with a mass of 0.18kg on a slide with an angle of 44°. To find the Ff you take cos44°=Ff /1.8N and you get 1.29N. Then to find the FN you take sin44°=FN/1.8N and you get 1.25N. Then Mr. Dickie gave us a new equation, Ff =µ(FN), to find the coefficient of friction. Using this equation you get 1.25N=µ(1.29N), then you get µ=0.97N.
Monday, March 14, 2011
Monday, March 14
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