A horizontal bar 1.5 metres long and of small cross-section rotates about vertical axis through one end. It accelerates uniformly from 1200 r.p.m. to 1500 r.p.m. in an interval of 5 seconds. What is the tangential component of the acceleration of the mid-point of the bar after 5 seconds after the acceleration begins ?

A horizontal bar 1.5 metres long and of small cross-section rotates ab

1.	A horizontal bar 1.5 metres long and of small cross-section rotates about vertical axis through one end. It accelerates uniformly from 1200 r.p.m. to 1500 r.p.m. in an interval of 5 seconds. What is the tangential component of the acceleration of the mid-point of the bar after 5 seconds after the acceleration begins ?
A.	18287 m/s<sup>2</sup>
B.	18387 m/s<sup>2</sup>
C.	18487 m/s<sup>2</sup>
D.	18587 m/s<sup>2</sup>
Answer» D. 18587 m/s<sup>2</sup>