NEET UG PHYSICS MCQ: WORK-ENERGY-POWER

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Application +4 | -1

In a circular motion of a particle, the tangential acceleration of the particle is given by

a_t=9 \mathrm{~m} / \mathrm{s}^2

. The radius of the circle is

4 \mathrm{~m}

. The particle was initially at rest. Time after which total acceleration of the particle makes an angle of

45^{\circ}

with the radial acceleration is:

View answer and explanation

Correct option: B

2 / 3 \,\mathrm{sec}

Option B (2/3 sec) is correct because it is the time when the tangential and radial accelerations are equal, resulting in a 45-degree angle between the total acceleration and the radial acceleration.

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