An athlete throws a discus from rest to a final angular velocity of 15 rad s^(-1) in 0.270 s before releasing it. During acceleration, discus moves in a circular arc of radius 0.810 m. Acceleration of discus before it is released is

An athlete throws a discus from rest to a final angular velocity of 15

1.	An athlete throws a discus from rest to a final angular velocity of 15 rad s^(-1) in 0.270 s before releasing it. During acceleration, discus moves in a circular arc of radius 0.810 m. Acceleration of discus before it is released is
Answer» `45 m s^(-2)` `182 m s^(-2)` `187 m s^(-2)` `192 m s ^(-2)` Solution :`omega = omega_(0) + alpha t or omega = 0 + alpha t` or `alpha = (omega)/(t) = (15)/(0.270) rad s^(-2)` `THEREFORE a = R alpha = 0.81 XX (15)/(0.270) = 45ms^(-2)`