A lift is going up. The total mass of the lift and the passengers is 1500kg. The variation in the speed of the lift is given by the graph.

(a) What will be the tension in the rope pulling the lift at time t equal to
(i) 1s, (ii) 6s, (iii)11s ?
(b) 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