(chatquestion)...The angular displacement (0) of a particle revolving about an axis is given by 0(1) = R- 2t + 7 radian. If the particle is moving in a radius of 20 cm, then 1. %3D at time t = 25 second tangential acceleration of particle is (1) Zero (2) 0.4 m/s2 (3) 0.8 m/s2 (4) 0.2 m/s?

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