Answer:
Weight required = 194.51 N
Explanation:
The elongation is given by

Length , L= 1.6 m
Diameter, d = 1.1 mm
Area

Change in length, ΔL = 2.8 mm = 0.0028 m
Young's modulus of copper, E = 117 GPa = 117 x 10⁹ Pa
Substituting,

Weight required = 194.51 N
Answer:
as fast as he wants, ladybugs are useless
Answer:
The solution is shown in the picture attached below
Explanation: