Question
Download Solution PDF0.5 किलोग्रॅम बॉलचा वेग 4 m/s वरून 8 m/s पर्यंत वाढवण्यासाठी किती कार्य केले जाते?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFसंकल्पना:
केलेले कार्य:
हे बल आणि विस्थापनाचे बिंदू उत्पादन आहे.
केलेले कार्य (W) = बल (F) x विस्थापन (S)
गतिज ऊर्जा:
कणाच्या वेगामुळे उद्भवणाऱ्या ऊर्जेला गतिज ऊर्जा म्हणतात.
हे K.E. द्वारे दर्शविले गेले आहे
\(K.E=\frac{1}{2}mV^2\)
जेथे m = कणांचे वस्तुमान आणि V = कणांचा वेग.
कार्य ऊर्जा प्रमेय :
प्रणालीवर सर्व बलांनी केलेले कार्य प्रणालीच्या गतिज ऊर्जेमध्ये बदल करण्यासारखेच आहे.
सर्व बलांनी केलेले कार्य (W) = अंतिम K.E - आरंभिक K.E
गणना :
दिलेले आहे की:
प्रारंभिक वेग (u) = m मीटर/सेकंद, अंतिम वेग (v) = m मीटर/सेकंद आणि
वस्तुमान (m) = 0.5 किलो
कार्य-ऊर्जा प्रमेय लागू करणे:
केलेले कार्य = गतिज ऊर्जेमध्ये बदलः
ΔK.E = (K.E)2 - (K.E)
\(\Rightarrow \frac{1}{2}m(v^2-u^2)\)
\(\Rightarrow \frac{1}{2}\times\;0.5\times(8^2-4^2)\)
∴ ΔK.E हे 12 J आहे.
Last updated on Jul 22, 2025
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