A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
I am not sure how to get the answer, please help!
A pendulum is set swinging. Its first oscillation is through an angle of 30 degrees, and each succeeding oscillation is through 95% of the angle of the one before it.
After how many swings is the angle through which it swings less than 1 degree?
anonymous
 one year ago
I am not sure how to get the answer, please help! A pendulum is set swinging. Its first oscillation is through an angle of 30 degrees, and each succeeding oscillation is through 95% of the angle of the one before it. After how many swings is the angle through which it swings less than 1 degree?

This Question is Closed

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1this is a geometric series whose terms can be written \( a, a r, a r^2, a r^3, \cdots \) where r is the common ratio you have \(30, 30(0.95), 30(0.95)(0.95), \cdots \) the nth term is given by \(t_n = ar^{n1}\), so for example \(t_2 = ar^{21} \implies 30(0.95)\). [0.95 is your r for you.] you want \(t_k = ar^{k1} \lt 1 \)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh I had the common ratio wrong. I had 0.905. Ok, I am going to try again

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I got the right thing now. Thank you very much for your help!
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.