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JEE Mains · Physics · STD 11 - 5. work,energy,power and collision

\(500\,gm\) द्रव्यमान का एक कण एक सरल रेखा में वेग \(v = b x ^{5 / 2}\) से गतिशील है \(x =0\) से \(x =4\,m\) तक इसके विस्थापन के दौरान कुल बल द्वारा किया गया कार्य होगा:\(\left(b=0.25 m ^{-3 / 2} s ^{-1}\right.\) लें \()\)

  1. A \(2\)
  2. B \(4\)
  3. C \(8\)
  4. D \(16\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(16\)

Step-by-step Solution

Detailed explanation

By work energy theorem work done by net force \(=\Delta K.E.\) \(\Rightarrow w =\frac{1}{2} mu _{ f }^{2}-\frac{1}{2} mv _{ i }^{2}\) \(w =\frac{1}{2} \times 0.5 \times(0.25)^{2} \times(4)^{5}\) \(W =16 \,J\)
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