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Motion in A Plane question

2011 · Q146
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Motion in A Plane question

2011 · Q146

NEETPhysicsMotion in A PlaneMCQ+4 / −1
A particle moves in a circle of radius 5 cm with constant speed and time period 0.2π\piπ s. The acceleration of the particle is
  1. A
    15 m/s2
  2. B
    25 m/s2
  3. C
    36 m/s2
  4. D
    5 m/s2
View written solutionFree

Correct answer: D

Centripetal acceleration ac=ω2r{a_c} = {\omega ^2}rac​=ω2r

=(2πT)2r = {\left( {{{2\pi } \over T}} \right)^2}r=(T2π​)2r

=(2π0.2π)2×5×10−2=5 = {\left( {{{2\pi } \over {0.2\pi }}} \right)^2} \times 5 \times {10^{ - 2}} = 5=(0.2π2π​)2×5×10−2=5 m/s2

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