Application of Fluid Dynamics and Energy Conservation in Mechanical SystemsA childβs race track is shown (not to scale) in the figure above. A toy car with a massof 24.3 g is released from rest at the starting position. In the figure R = 19.1 cmandh = 63.9 cm.What is the initial gravitational potential energy of the car?______Jπ=ππβ==>π=(24.31000)β(9.8)β(0.639)==>π=0.15217==>π=π.ππππ±------------------------------------------------------------------------------------What is the speed of the car at the top of the loop?______m/sconservation of energy:πππππππππππ¦=ππππ‘πππππππππ¦ππ(2π
)+(12)ππ£2=ππβ==>π(2π
)+(12)π£2=πβ==>(12)π£2=πββπ(2π
)==>π£2=2π(ββ2π
)==>π£=β2π(ββ2π
)==>π£=β2β(9.8)β(0.639β2β0.191)==>π£=2.2444π/π ==>π=π.πππ/π------------------------------------------------------------------------------------What is the magnitude of the acceleration of the car at the top of the loop?__m/s2Preview Mode
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