A lift is going up. The total mass of the lift and the passenger is 1500 kg. The variation in the speed of the lift is as shown in the figure. Find the tension in the rope pulling the lift at t = 11 th second.

A lift is going up. The total mass of the lift and the passenger is 15

1.	A lift is going up. The total mass of the lift and the passenger is 1500 kg. The variation in the speed of the lift is as shown in the figure. Find the tension in the rope pulling the lift at t = 11 th second.
Answer» Solution :Acceleration of LIFT at 11TH second = slope of the line CD `a_(11)=(0-3.6)/(12.10)` `=-1.8 m//s^(2)` `T=m(g+a)=1500(9.8-1.8)` `= 1500xx8=12000 N`