13–89 Kinetics of a Particle: Force and Acceleration (Chapter 13: Hibbeler Dynamics) Benam Academy

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ENGINEERING MECHANICS - DYNAMICS, 14TH EDITION, R. C. HIBBELER
CHAPTER 13: Kinetics of a Particle: Force and Acceleration
PROBLEM: 13–89
13–89. The boy of mass 40 kg is sliding down the spiral slide at a constant speed such that his position, measured from the top of the chute, has components r = 1.5 m, u = (0.7t) rad, and z = (-0.5t) m, where t is in seconds. Determine the components of force Fr, Fu, and Fz which the slide exerts on
him at the instant t = 2 s. Neglect the size of the boy
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