43_Dynamics 11ed Manual - Engineering Mechanics Dynamics...

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Unformatted text preview: Engineering Mechanics - Dynamics Chapter 12 Given: t1 = 30 s t2 = 60s m a1 = 9 2 s a2 = 15 m 2 s Solution: τ 1 = 0 , 0.01 t1 .. t1 v1 ( τ 1 ) = a1 τ 1 t1 τ 2 = t1 , 1.01 t1 .. t2 v2 ( τ 2 ) = s2 ( τ 2 ) 3 s1 ( τ 1 ) = s 23m a1 τ 1 t1 4 1 2 12 m ⎤s ⎡ a1 t 1 + a2 ( τ 2 − t1 )⎥ ⎢ ⎣3 ⎦m ⎡ a1 t12 a1 t1 (τ 2 − t1)2⎤ s2 =⎢ + (τ 2 − t1) + a2 2 ⎥ m 3 ⎣ 12 ⎦ Velocity in m/s 600 () v2( τ 2) 200 v1 τ 1 400 0 0 10 20 30 40 τ 1, τ 2 Time in seconds 41 50 60 70 ...
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