You have been hired to design a spring-launched roller coaster that will carry two passengers per car. The car goes up a 13-m-high hill, then descends 19 m to the track's lowest point. You've determined that the spring can be compressed a maximum of 2.5 m and that a loaded car will have a maximum mass of 450 kg. For safety reasons, the spring constant should be 15% larger than the minimum needed for the car to just make it over the top. Part A What spring constant should you specify? Express your answer with the appropriate units. View Available Hint(s) k= Value Submit Part B U= HA What is the maximum speed of a 370 kg car if the spring is compressed the full amount? Express your answer with the appropriate units. View Available Hint(s) Value Submit HÅ Units Units C ? www ?

Full solution for this question. Answer is 0.919m

A block of mass 2.80 kg is placed against a horizontal spring of constant k = 745 N/m and pushed so the spring compresses by 0.0550 m. HINT (a) What is the elastic potential energy of the block-spring system (in J)?   When a spring is compressed or stretched, the spring potential energy,  PEs =  1 2 kx2,  is always positive. Gravitational potential energy,  PEg = mgy,  can be positive or negative depending on whether an object is above or below the  y = 0  reference height. J (b) If the block is now released and the surface is frictionless, calculate the block's speed (in m/s) after leaving the spring.   m/s

You have been hired to design a spring-launched roller coaster that will carry two passengers per car. The car goes up a 12-m-high hill, then descends 15 m to the track's lowest point. You've determined that the spring can be compressed a maximum of 2.1 m and that a loaded car will have a maximum mass of 400 kg. For safety reasons, the spring constant should be 12% larger than the minimum needed for the car to just make it over the top. Part A What spring constant should you specify? Express your answer with the appropriate units. ► View Available Hint(s) k = 2.4x104 N Submit ✓ Correct Correct answer shown. Your answer 23893 was either rounded differently Part B v= Previous Answers What is the maximum speed of a 340 kg car if the spring is compressed the full amount? Express your answer with the appropriate units. ▸ View Available Hint(s) 18 Submit Previous Answers m m X Incorrect; Try Again; 8 attempts remaining Be sure to find the velocity of the car specifically of 340 kg. used a…