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Question

A particle moves in a circle of radius 20 cm. Its linear speed is given by v = 2t, where t is second and v in metre/second. Find the radial and tangential acceleration at t = 3 s.



A
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B

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C

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D
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Solution

The correct option is D
The linear speed at t = 3 s is
v = 2t = 6 m/s
The radial acceleration at t = 3 s is
ar=v2r=180 m/s2
The tangential acceleration is
at=dvdt=2 m/s2

Physics

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