Roller Coaster Energy Calculations

[sroy1313]

The attached problem has clearly confused me. I tried solving it, but I get to a point where I can't go any further. If someone could point me in the right direction I appreciate it. Also the calculations topwards the bottom of the page are from me attempting to solve.

Thanks in advance



View attachment Problem #5.pdf

 

[truesearch]

Use SI units
Calculate KE at start
Calculate Ke at bottom
Use centripetal acceleration for the curved part