A 5.0-kg block is attached to an ideal massless spring whose ...

[schs14]

A 5.0-kg block is attached to an ideal massless spring whose spring constant is 125 N/m. The block is pulled from its equilibrium position at x = 0.00 m to a position at x = +0.687 m and is released from rest.
 
  The block then executes lightly damped oscillation along the x-axis, and the damping force is proportional to the velocity. When the block first returns to x = 0.00 m, its x component of velocity is -2.0 m/s and its x component of acceleration is +5.6 m/s2. (a) What is the magnitude of the acceleration of the block upon release at x = +0.687 m. (b) Find the damping constant b.

Question 2

Compared with an alcohol barometer, the column height for a mercury barometer would be
 
  A) lower.
  B) higher.
  C) the same.

[makaylafy]

Answer to Question 1

(a) 17.2 m/s2 (b) 14 kg/s

Answer to Question 2

Answer: A

[schs14]

Wow, this really help

[Joy Chen]

TYSM