Physics, asked by dayamoypramanik1234, 1 month ago

40 kg ভরের একটি বালক 10 টি সিঁড়ি হেঁটে উঠল। প্রতিটি সিঁড়ির উচ্চতা 10 cm হলে, বালক দ্বারা কৃতকার্য A) 392 J. B) 196] J. © 1960 J d)98 J

Answers

Answered by RealSweetie

1

কৃতকার্য=প্রযুক্ত বল×সরণ

10 টি সিঁড়ির উচ্চতা =10×10=100cm=1m

ভর=40kg

প্রযুক্ত বল=40×9.8 N=392 N

কৃতকার্য=392×1 joule =392 joule

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