A mass attached to a very light spring executes simple harmonic ...

[neverstopbelieb]

A mass attached to a very light spring executes simple harmonic motion. If you want to double its total energy, you should
 
  A) double the amplitude of vibration while changing nothing else.
  B) double the force constant of the spring while changing nothing else.
  C) double both the amplitude and force constant.
  D) double the mass while changing nothing else.
  E) double both the mass and amplitude of vibration.

Question 2

A 50 kg uniform ladder, 5.0 m long, is placed against a smooth wall at a height of h = 3.7 m. The base of the ladder rests on a rough horizontal surface whose coefficient of static friction is 0.40.
 
  An 80 kg block is suspended from the top rung of the ladder, just at the wall. In Figure 10.12, the magnitude of the force exerted on the base of the ladder, due to contact with the rough horizontal surface is closest to: A) 1,580
  B) 1,560
  C) 1,550
  D) 1,600
  E) 1,610

[lkanara2]

Answer to Question 1

B

Answer to Question 2

A

[neverstopbelieb]

Excellent

[amandalm]

Gracias!