homework help > physics > physics q&a board > topic: block attaached to a spring...

Q BgQuestion:

      
Mentor
Karma Points: 404
Respect (96%):
posted by  Chrissy0022 on 11/5/2009 2:35:22 AM  |  status: Live  |  Earned Karma: 404

Block attaached to a spring

Course Textbook Chapter Problem Needs by
General Physics N/A N/A N/A 11/5/2009 at 1:00:00 PM
Question Details:

1.      A block attached to a spring with an unknown spring constant oscillates with a period of 4.0 s.  What is the period if:

a.       A.The mass is doubled?

b.      B.The mass is halved?

c.       C.The amplitude is doubled?

d.      D.The spring constant is doubled?
Bonus Point Alert! Earn +8 additional karma points for helping this platinum member.

AAnswers:

Answer Question Ask for clarification
Expert
Karma Points: 802
posted by Mobiusdick on 11/5/2009 2:50:14 AM  |  status: Live
Asker's Rating: Helpful   
Response Details:
Equation:  T = 2π√(m/k)

a) Ta= 2π√(2m/k) => √2 (2π√(m/k)) => √2 T0 = 4√2.

b) Tb = 2π√(m/2k) => (1/√2)(2π√(m/k)) => 1/√2 T0 => 4/√2

c) Amplitude has no impact on the period. So it just equals 4.

d) If the spring constant is doubled, the equation is the same as b, so it is again 4/√2.
Answer Question Ask for clarificarion
Ask New Question

Join Cramster's Community

Cramster.com brings together students, educators and subject enthusiasts in an online study community. With around-the-clock expert help and a community of over 100,000 knowledgeable members, you can find the help you need, whenever you need it. Join for free today » How Cramster is different from tutoring »

Need Help In

Useful Links