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Per NCERT Activity 7.2 (the simple pendulum), why does the pendulum bob REACH ALMOST THE SAME HEIGHT on the opposite side as the height from which it was released?
AGravity pushes it back to the same height
BThere's no scientific explanation
CThe bob is pulled magnetically
DConservation of mechanical energy — PE at release converts to KE at the bottom, then back to PE at the opposite extreme; energy is conserved
Answer & Solution
Correct answer: D. Conservation of mechanical energy — PE at release converts to KE at the bottom, then back to PE at the opposite extreme; energy is conserved
Per NCERT Activity 7.2, conservation of mechanical energy means the pendulum returns to almost the same height (small losses to friction/air resistance over time).
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