Conservation of mechanical energy in free fallमुक्त पतन में यांत्रिक ऊर्जा का संरक्षण

NCERT Fig 7.19 · interactive diagram

Parts and their functions

• At height h (at rest) (ऊँचाई h पर (विराम में)) — PE = mgh, KE = 0. Total = mgh.
• Halfway down (आधे रास्ते पर) — Lost PE = gained KE: PE = mgh/2, KE = mgh/2.
• Just before hitting the ground (ज़मीन से टकराने से ठीक पहले) — PE ≈ 0, KE = ½mv² = mgh, so v = √(2gh). On impact the energy becomes sound, heat and work done in deforming the ground.

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 7.19. Report a mistake