391_Dynamics 11ed Manual

391_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 15 t m d d m' = ρ vA = v m' A = v 0.24 m s = Σ Fm t v d d t m d d v DR = FM 1 am ' v = a ' v + M 1 = a 0.11 m s 2 = a 112 mm s 2 = Problem 15-126 The earthmover initially carries sand of volume V having density . The sand is unloaded horizontally through a dumping port P of area A at rate of r measured relative to the port. Determine the resultant tractive force F at its front wheels if the acceleration of the earthmover is a when half the sand is dumped. When empty, the earthmover has mass M . Neglect any resistance to forward motion and
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