A 25-kg piece of equipment can be hung by steel wires of length 1.00 m,2.00 m,or 3.00 m.If all the wires have the same diameter,which one will stretch the greatest distance?

Question

Quizplus · Accepted Answer

The stretching of a wire is directly proportional to its length and the weight hung on it. Therefore, the longer the wire, the greater the stretching. Since all wires have the same diameter, they will have the same elastic modulus, which means that the ratio of force to extension is the same for all wires. Therefore, the 3.00-m wire will stretch the most because it is the longest wire.

A 25-Kg Piece of Equipment Can Be Hung by Steel