• Support PF! Buy your school textbooks, materials and every day products Here!

Oscillations of air-track glider

  • Thread starter Kalie
  • Start date
  • #1
46
0
A 160 g air-track glider is attached to a spring with spring constant 4.40 N/m. The damping constant due to air resistance is 2.40×10−2 kg/s. The glider is pulled out 23.0 cm from equilibrium and released.

How many oscillations will it make during the time in which the amplitude decays to e^-1 of its initial value?

I have no clue how to approach this problems except that
x(t)=Ae^-bt/2m=Ae^-t/2tau
but how can I fin that amount of oscillations?
I'm confused and the dead lines in an hour
please help!
 

Answers and Replies

  • #2
OlderDan
Science Advisor
Homework Helper
3,021
2
Kalie said:
A 160 g air-track glider is attached to a spring with spring constant 4.40 N/m. The damping constant due to air resistance is 2.40×10−2 kg/s. The glider is pulled out 23.0 cm from equilibrium and released.

How many oscillations will it make during the time in which the amplitude decays to e^-1 of its initial value?

I have no clue how to approach this problems except that
x(t)=Ae^-bt/2m=Ae^-t/2tau
but how can I fin that amount of oscillations?
I'm confused and the dead lines in an hour
please help!
The damped oscillator equation for x(t) has a decaying exponential part and an oscillatory part (sine or cosine). You need both parts to do this problem.

http://hyperphysics.phy-astr.gsu.edu/Hbase/oscda.html
 

Related Threads for: Oscillations of air-track glider

  • Last Post
Replies
8
Views
11K
  • Last Post
Replies
6
Views
6K
  • Last Post
Replies
1
Views
9K
Replies
3
Views
6K
Replies
3
Views
4K
Replies
18
Views
4K
Replies
8
Views
11K
Replies
5
Views
2K
Top