Question

An elevator and its load have a combined mass of 1800 kg. Determine the tension in the supporting cable when it is moving down with a retardation of 2 m/s ${}^2$?( Take g = 10 m/s${}^2$)

• A. 14,400 N
• B. 21,600 N
• C. 18,000 N
• D. 20,000 N

Answer 1

The correct option is A 14,400 N

Given,

Mass,$m=1800kg$

Acceleration,$a=2m/s^2$

Now, we have

$mg-T=ma$

$T=m(g-a)$

$T=1800(10-2)$

$T=14400N$

Hence, tension is $14400N$