# Answer on Mechanics | Relativity Question for Jackie

Question #53248

An 800kg roller coaster car is launched horizontally from a giant spring (k = 35 kN/m), rolls 10 m and them goes thru a vertical loop of radius 7 m. If for every meter the car rolls on the track, thermal energy increases by 800 J, would compressing the spring 3 m give the car enough energy to safely get to the top of the loop?

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