Subject
Govt.Jobs
Topic
সিকিউরিটি প্রিন্টিং কর্পোরেশন লি. সহকারি ব্যবস্থাপক (সাধারণ)-২৬.১১,২০২১
A train is moving at the rate 8 mi/h along a piece of circular track of radius 2500 ft. Through what angle does it turn in 1 min?
A train is moving at the rate 8 mi/h along a piece of circular track of radius 2500 ft. Through what angle does it turn in 1 min?
ক)
0.3816 rad or 18.13°খ)
0.2816 rad or 16.13°গ)
0.2844 rad or 16.13°ঘ)
0.2916 rad or 17.13°Explanation
আমরা জানি ,1 মাইল =5280 ফুট এখন ,8 মাইল /ঘণ্টা =(8×5280)/60 ফুট /মিনিট =704 ফুট /মিনিট অতএব ,বৃত্তাকার পথে ট্রেনটি 1 মিনিটে যায় 704 ফুট আমরা জানি ,S=r θ বা, θ=s/r=704/2500 =0.2816 রেডিয়ান বা 16.13⁰Related questions
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