Question

A fully loaded elevator has a mass of 6000 kg. The tension in the cable as the elevator is accelerated downward with an acceleration of 2ms${}^{-2}$ is(Take g = 10 ms${}^{-2}$)

• A. $7.2\times {10}^{4}N$
• B. $4.8\times {10}^{4}N$
• C. $6\times {10}^{4}N$
• D. $1.2\times {10}^{4}N$

Answer 1

The correct option is B $4.8\times {10}^{4}N$

$mg-T=ma$
$T=m(g-a)$
$6000(10-2)=4.8\times {10}^{4}N$