Elastic energy of rubber straps is can be changed to kinetic energy of the capsule which is also changed into gravitational potential energy of a capsule.
Energy can not be created nor destroyed but we could move it from one form to another even though a bit of the energy could be lost as heat during conversion. These are the postulates of the first and second laws of thermodynamics.
As for the energy changes that does take place when there is a capsule ride; elastic energy of rubber straps is can be changed to kinetic energy of the capsule which is also changed into gravitational potential energy of a capsule.
Learn more about energy transformation: brainly.com/question/8210521
#SPJ1