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Motion in A Plane question

2016 · Q142
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Motion in A Plane question

2016 · Q142

NEETPhysicsMotion in A PlaneMCQ+4 / −1
In the given figure, a = 15 m s−-−2 represents the total acceleration of particle moving in the clockwise direction in a circle of radius R = 2.5 m at a given instant of time. The speed of the particle is

NEET 2016 Phase 2 Physics - Motion in a Plane Question 15 English
  1. A
    4.5 m s−-−1
  2. B
    5.0 m s−-−1
  3. C
    5.7 m s−-−1
  4. D
    6.2 m s−-−1
View written solutionFree

Correct answer: C

NEET 2016 Phase 2 Physics - Motion in a Plane Question 15 English Explanation


Here ${a_c} = a\cos {30^o}$ = 15 $ \times $ ${{\sqrt 3 } \over 2}$ m/s2

We know, $${a_c} = {{{v^2}} \over R}$$

$ \Rightarrow $ $v = \sqrt {{a_c}R} $ = $$\sqrt {15 \times {{\sqrt 3 } \over 2} \times 2.5} $$ = 5.7 m/s
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