1 కిలోల ద్రవ్యరాశి ఉన్న వస్తువు 10 మీ/సె వేగంతో కదులుతోంది. వస్తువు యొక్క గతి శక్తిని కనుగొనండి.

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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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Detailed Solution

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భావన:

గతి శక్తి (K.E):

  • ఒక శరీరం తన చలనం ద్వారా కలిగి ఉన్న శక్తిని గతి శక్తి అంటారు.
  • గతి శక్తికి వ్యక్తీకరణ

\(KE = \frac{1}{2}m{v^2}\)

ఇక్కడ m = శరీరం యొక్క ద్రవ్యరాశి మరియు v = శరీరం యొక్క వేగం

లెక్కింపు:

ఇచ్చిన:

ద్రవ్యరాశి (m)= 1 kg.

వేగం (v)= 10 మీ/సె.

కైనెటిక్ ఎనర్జీ యొక్క సమీకరణం ఇవ్వబడింది,

గతి శక్తి =\({1 \over 2}\times {m \times v^2}\)

\(Kinetic Energy= {1\over2}\times{1 \times 10^2}={100\over2}=50 J\)

∴వస్తువు యొక్క గతి శక్తి 50 J.

∴ సరైన ఎంపిక 4వది.

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