SSC GD Constable previous year question
Two objects A and B of mass 2 kg and 3 kg, respectively, were dropped from different heights. A took 5 seconds and B took 3 seconds to touch the ground. What is the ratio of their kinetic energy with which they hit the ground?
Asked in SSC GD Constable 2025: 05 Feb 2025 Shift 3 · General Awareness
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Correct answer: (C) 50/27
KE = ½m(gt)², so KE ratio = (m_A t_A²)/(m_B t_B²) = (2×25)/(3×9) = 50/27.
हिंदी में प्रश्न
द्रव्यमान 2 किग्रा और 3 किग्रा वाली दो वस्तुएँ A और B को अलग-अलग ऊँचाइयों से गिराया गया। A को ज़मीन छूने में 5 सेकंड और B को 3 सेकंड लगे। ज़मीन से टकराते समय उनकी गतिज ऊर्जा का अनुपात क्या है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 50/27
KE = ½m(gt)², अतः KE अनुपात = (m_A t_A²)/(m_B t_B²) = (2×25)/(3×9) = 50/27।
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