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20 cm त्रिज्या वाले एक वृत्त पर एक कण चाल v =2t के अनुसार चलता है, जहाँ t सेकंड में और v मीटर /सेकंड में है। सयम t= 3 s पर कण का त्वरण त्रिज्या की ओर तथा स्पर्शरेखा की ओर निकाले।

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t = 3 s पर बल की चाल v=2t=6 m/s.
अतः, त्रिज्या की ओर त्वरण,
`a_(t)=(v^(2))/(R)=(36)/(20xx10^(-2))m//s^(2)=180m//s^(2)`
स्पर्शरेखा की ओर त्वरण,
`a_(t)=(dv)/(dt)=(d)/(dt)(2t)=2m//s^(2)`.

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