When a 125-kg piece of equipment is hung from a steel wire of length 75 cm, it stretches the wire by 4.00 mm . If instead the wire had a length of 150 cm, but all else were the same, by what distance would the same equipment stretch the wire?
A) 8.00 mm
B) 2.00 mm
C) 16.0 mm
D) 4.00 mm
E) 1.00 mm

Question

When a 125-kg piece of equipment is hung from a steel wire of length  75 cm, it stretches the wire by  4.00 mm . If instead the wire had a length of  150 cm, but all else were the same, by what distance would the same equipment stretch the wire?
A)  8.00 mm
B)  2.00 mm
C)  16.0 mm
D)  4.00 mm
E)  1.00 mm

Quizplus · Accepted Answer

The stretch in the wire is directly proportional to its length. Doubling the length of the wire from 75 cm to 150 cm doubles the stretch from 4.00 mm to 8.00 mm.

When a 125-Kg Piece of Equipment Is Hung from a Steel