Question

When a empty lift is moving down with acceleration of G by 4 metre per second square the tension of the cable is 9000 Newtons when the lift is moving up with an acceleration of G by 3 metre per second square the tension of the cable is??

Answer 1

so mate hope u understand

Answer 2

Answer:

Tension = 16000 N

Explanation:

In the question,

The acceleration of the lift when it is moving downwards, a = $\frac{g}{4} m/s^{2}$

Tension in the cable at that time is, T = 9000 N

So,

$mg-m(\frac{g}{4})=T\\\frac{3mg}{4}=9000\\So,\\mg=12000$

Now, when the lift is moving upwards.

The acceleration of the lift is given by, a = $\frac{g}{3} m/s^{2}$

Therefore,

$T=mg+\frac{mg}{3}\\ T=\frac{4mg}{3}=\frac{4\times 12000}{3}=16000\ N$

Therefore, the Tension in the cable at the time of the ascend is 16000 Newtons.