1 किलो वजनाची वस्तू 10 मी/से वेगाने फिरत आहे. वस्तूची गतिज ऊर्जा शोधा.

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RRB ALP Electrician 22 Jan 2019 Official Paper (Shift 1)
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  1. 5 J
  2. 100 J
  3. 10 J
  4. 50 J

Answer (Detailed Solution Below)

Option 4 : 50 J
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संकल्पना:

गतिज ऊर्जा (K.E):

  • एखाद्या वस्तूमध्ये त्याच्या गतीवर आधारित असलेल्या ऊर्जेला गतिज ऊर्जा म्हणतात.
  • गतिज ऊर्जेची पदावली \(KE = \frac{1}{2}m{v^2}\)आहे.

जेथे  m = वस्तूचे वस्तुमान आणि v = वस्तूचा वेग

गणना:

दिलेले:

वस्तुमान (m) = 1 किलो.
वेग (v) = 10 मीटर/सेकंद.
 
गतिज ऊर्जेचे समीकरण दिले आहे,
गतिज ऊर्जा =\({1 \over 2}\times {m \times v^2}\)
\(Kinetic Energy= {1\over2}\times{1 \times 10^2}={100\over2}=50 J\)
∴ वस्तूची गतिज ऊर्जा 50 J आहे.
योग्य पर्याय 4th आहे.
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