Can i plez get some help?

A roller coaster cart of mass m slides down a frictionless track and collides with another, heavier, cart of mass M. After the collision, the two carts stick together and move through a vertical “loop-de-loop”. If the collision is perfectly inelastic, find the minimum height required so that the two carts can just... show more A roller coaster cart of mass m slides down a frictionless track and collides with another,
heavier, cart of mass M. After the collision, the two carts stick together and move
through a vertical “loop-de-loop”. If the collision is perfectly inelastic, find the minimum
height required so that the two carts can just make it through the loop. The loop has a
radius of R.