134_Physics ProblemsTechnical Physics

134_Physics ProblemsTechnical Physics - 136 P5.41 The Laws...

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136 The Laws of Motion P5.41 m = 300 . k g , θ 30 0 ., x = 200 m , t = 150 s (a) xa t = 1 2 2 : 1 2 400 178 2 2 .. . . . m s ms 2 = == a a a f af FIG. P5.41 Fnf g a =++ = mm : Along : Along : x f mg ma fm g a yn m g nm g 03 0 0 30 0 0 0 0 30 0 −+ ° = +− ° = sin . sin . cos . cos . bg (b) μ k f n mg a mg ° ° sin . cos . 30 0 30 0 , k a g ° = tan . cos . . 30 0 30 0 0368 (c) g a sin . 30 0 , f = 3 00 9 80 30 0 1 78 9 37 s i n . . . N (d) vv a xx
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