A lift is going up. The total mass of the lift and the passengers is 1500 kg . The variation in the speed of the lift is given by the graph as shown in figure.
(a) What will be the tension in the rope pulling the lift at time t equal to
(i) 1 sec (ii)6 sec (iii)11 sec?
(b) What is the height to which the lift lakes the passengers?
What will be the average velocity and the average
acceleration during the course of the entire motion?

Answer

(a) (i) `1.8 m//s^(2)`, (ii) 0, (iii)`-1.8 m//s^(2);` (b)36 m; (c) 0