A lift is going up. The total mass of the

Your Ultimate Guide to JEE & NEET Question Solutions

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 given in the graph. The tension in the rope pulling the lift at $t = 11^{th}\, sec$ will be ............ $N$

A

$17400$

B

$14700 $

C

$12000$

D

$0$

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 given in the graph. The tension in the rope pulling the lift at $t = 11^{th}\, sec$ will be ............ $N$

At $11^{th}$ second lift is moving upward with acceleration

$a = \frac{{0 - 3.6}}{2} = - 1.8\,m/{s^2}$

Tension in rope,$T = m(g - a) = 1500(9.8 - 1.8) = 12000\,N$