Jackinthebox and a spring. The potential energy of a compressed spring is converted to the kinetic energy motion of an uncoiling spring as the box is opened, causing the clown to leap out. Editorial Stock Photo - Afloimages
Jack-in-the-box and a spring. The potential energy of a compressed spring is converted to the kinetic energy (motion) of an uncoiling spring as the box is opened, causing the clown to leap out.