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a cars windsheild wiper rotated 125degrees. the total length of the wiper mechanism is 25 inches and wipes the windshield over a distance of 14inches. find the area coveredby the wiper.

 Sep 23, 2014

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 #2
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Thanks and just for laughs.. i once knew a guy whose whole left side got chopped off, hes all right now.

 Sep 23, 2014
 #1
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First, find Θ

s =rΘ

14 = 25Θ

So Θ = 14/25 rads

 

A = (1/2)r2Θ

A = (1/2)(25cm)2 (14/25) = 7(25)cm2 = 175cm2

 

 Sep 23, 2014
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Thanks and just for laughs.. i once knew a guy whose whole left side got chopped off, hes all right now.

Guest Sep 23, 2014

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