Question

A cable used to lift heavy materials must support twice the load for safety. What cross-sectional area should the cable have if made of steel?

a. Not specified
b. 2 m²
c. 3 m²
d. 4 m²

Answer 1

The cross-sectional area of the steel cable should be 4 m².

Step-by-step explanation:

To determine the cross-sectional area of the steel cable, we need to consider the safety factor of 2 and the load it needs to support. The cross-sectional area is directly proportional to the load it can support. If the load is doubled, the cross-sectional area should also be doubled for safety reasons. Therefore, the correct answer is (d) 4 m².