A lift of mass 2000 kg is supported by thick steel ropes . If maximum upward acceleration of the lift be `1.2 m//s^(2)` , and the breaking stress for the ropes be
`2.8 xx 10^(8) Nm^(-2)`
what should be the minimum diameter of rope ?

Explanation

To solve the problem, we need to find the minimum diameter of the steel rope that can support a lift of mass 2000 kg with a maximum upward acceleration of 1.2 m/s², given that the breaking stress for the ropes is 2.8 x 10^8 N/m².

### Step-by-step Solution:

1. **Identify the Forces Acting on the Lift:**
- The weight of the lift (W) is given by:
\[
W = mg
...