Recent content by yvonne1313

i only know the energy conservation approach, i think that's what its called, with the equations of motion, w=f.s, ep=mgh, ek=0.5mv^2

is there enough info, or is there something missing?

Homework Statement A frictionless rollercoaster does a vertical loop with a radius of 6.0m. a) what is the minimum speed that the roller coaster must have at the top of the loop so that it stays in touch with the rail? Homework Equations 2∏r should be used for the circumference but i...