ভরের একটি ছেলে 20 kg ভরের একটি ট্রলির ওপর দাঁড়িয়ে আছে। ট্রলিটি 4 m/s প্রাথমিক বেগনিয়ে চলতে শুরু করে এবং 16 m যাবার পর থেমে যায়। ট্রলির ওপর কৃত কার্য এবং ছেলেটি দ্বারা কৃত কার্যের পরিমাণ নির্ণয় করাে।

ভরের একটি ছেলে 20 kg ভরের একটি

1.	ভরের একটি ছেলে 20 kg ভরের একটি ট্রলির ওপর দাঁড়িয়ে আছে। ট্রলিটি 4 m/s প্রাথমিক বেগনিয়ে চলতে শুরু করে এবং 16 m যাবার পর থেমে যায়। ট্রলির ওপর কৃত কার্য এবং ছেলেটি দ্বারা কৃত কার্যের পরিমাণ নির্ণয় করাে।
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