For safety in climbing, a mountaineer uses a 50-m long nylon rope ...

[HCHenry]

For safety in climbing, a mountaineer uses a 50-m long nylon rope that is 1.0 cm in diameter. When supporting a 90-kg climber, the rope elongates 1.6 m. Find the Young's modulus for the rope material.

Question 2

Aluminum Rod1 has a length L and a diameter d. Aluminum Rod2 has a length 2L and a diameter 2d. If Rod1 is under tension T and Rod2 is under tension 2T, how do the changes in length of the two rods compare?
 a. They are the same.
  b. Rod1 has double the change in length that Rod2 has.
  c. Rod2 has double the change in length that Rod1 has.
  d. Rod1 has quadruple the change in length that Rod2 has.
  e. Rod2 has quadruple the change in length that Rod1 has.

[raili21]

Answer to Question 1

3.51  108 N/m2

Answer to Question 2

a

[HCHenry]

Thanks for the timely response, appreciate it

[Joy Chen]

Excellent