Question

1. A winding drum raises a cage through a height of 120 m. The cage has, at first, an acceleration of 1.5 m/s2 until the velocity of 9 m/s is reached, after which the velocity is constant until the cage nears the top, when the final retardation is 6 m/s2 . Find the time taken for the cage to reach the top.

Answer 1

Answer:

6s

Explanation:

v=u+at

9=0+1.5×t

9/1.5=t

6=t