Question
Download Solution PDFदोन गाड्या समांतर रुळांवर एकाच दिशेने अनुक्रमे 80 किमी/तास आणि 90 किमी/तास वेगाने धावत आहेत. गाड्या 3 मिनिटात एकमेकांना पार केल्या. जर एका ट्रेनची लांबी 230 मीटर असेल तर दुसऱ्या ट्रेनची लांबी (मी मध्ये) किती असेल?
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दोन गाड्यांचा वेग 80 किमी/तास आणि 90 किमी/ताशी आहे
ते एकमेकांना 3 मिनिटांत पार करतात
वापरलेली संकल्पना:
वेळ = अंतर/वेग
सापेक्ष गती = जेव्हा दोन शरीरे एकाच दिशेने फिरतात तेव्हा त्यांचा सापेक्ष वेग वैयक्तिक वेगापेक्षा भिन्न असेल
गणना:
3 मिनिटे = 180 से
गाड्यांची सापेक्ष गती = 90 - 80
⇒ 10 किमी/ता
गती मी/सेकंद = 10 × (5/18)
⇒ २५/९
दुसऱ्या ट्रेनची लांबी xm असू द्या
आता,
[(२३० + x)/(२५/९)] = १८०
⇒ (230 + x) = 180 × (25/9)
⇒ 230 + x = 500
⇒ x = 270
तर, इतर ट्रेनची लांबी = 270 मी
∴ इतर ट्रेनची लांबी (m मध्ये) 270 आहे.
Last updated on Jul 19, 2025
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